Friday, December 20, 2019

Not a quiz, but.....

This one I posted in Facebook back in 2013.  It is still apropos.

le début des vacances
twas five days before christmas and wielding a grin,
lanny was happy 'cause he got his grades in.

Happy holidays to one and all. 

Wednesday, December 18, 2019

Course Grades Have Been Uploaded Into Banner

I just posted this.  It seemed to accept my upload.  Several students were given ABS grades, so I will be making changes to the Banner grades, as I receive the work from the students who currently have an ABS.

Friday, December 13, 2019

Grades Have Been Upload Into Moodle

This includes the last Excel homework on the Shapiro-Stiglitz model, the Blog Posts Second Half, and the Comments Second Half. 

Here is some information about how the scores were determined.  There were 6 posts in the second half.  (I had originally planned for 7).  On the Comments, everyone got 8 points for free and then I simply counted how many posts you commented on and multiplied that by 7.  If you made more than one comment on your post, I didn't count it here.  However, I did account for it in the scores on the posts themselves.

For that, each person got 30 points for free.  Most people did all the rest of the posts.  Then I made a qualitative determination on your performance based on the posts and the comments and whether you seemed to incorporate my comments.  There is no algorithm here, just my subjective interpretation.  I'm something of a strict grader on this, so nobody got 210 points.  Indeed nobody got 200 points.  A score of 190 was quite a good performance.  I save the remaining performance because all of you can do still better.

There are comments to accompany the points.  For those who missed some posts, the comments may have referred to that rather than to your general performance

Finally - if any of you want to become a professor some day, note that it is a nice job most of the time, but on days like this the job doesn't pay enough.

Thursday, December 12, 2019

Bah, Humbug. Scrooge was an economist!

When gift exchange goes awry.  For your amusement only.  I thought you'd find the title of this piece interesting.  There is an economics paper  published in the American Economic Review (the top journal in the U.S.) back in 1993 that got all of this started.  You can find the paper here.

Wednesday, December 11, 2019

Not Course Related - I need some advice

My sister is turning 70 in 4 weeks.  I need an original idea for a present for her.  All thoughts on the matter are welcome as comments or send me email.

A little humor and....

.... if you've never seen it before an essential part of anyone's education about American culture.

Some Follow Up On The Assessment By Students In The Final Blog Posts

Since I started to teach this class, the blogging has been a feature that students mainly like while students are more divided on the Excel homework.  I want to draw some meta lessons from that (as if we're looking down on the class from on high).

I've only taught one non-economics course at Illinois, which was a CHP class back in 2009.  (I have been involved in some adult education short courses, but not through the university.)  The title of the class was Designing for Effective Change.  It was the first time I taught with blogging and I published an article about it in Inside Higher Ed.  I learned several things from that experience.  The two I'll mention here are (1) the need to have aliases (though I'm guessing that potential future employers wouldn't be able to find your blog even if you used your real name) to help get students comfortable with blogging out in the open and (2) the benefit of reacting to what students say without trying to steer the students to some correct answer.   Had I taught an Econ class as the first experience with blogging, I don't think I would have come up with that.  So it was a happy accident. Sometimes we benefit from serendipity.  And we definitely benefit from learning by doing.

I was trained in graduate school on how to do math models for economics and I lectured on them for many years.  At the graduate students level, it went pretty well.  At the undergraduate level, the results have always been far more mixed.  Except for some spot lectures to clear up student confusion, what I've found is that a significant fraction of the students either can't penetrate the lecture or show no inclination to try, so within 5 minutes they have a glazed look on their faces.  The video lectures are a partial solution to that.  Experience suggests that iff students can complete the Excel homework without watching the video all the way through, most of them will do that.  But if students are bored with the face to face lecture and won't watch the video all the way through, what's a better alternative?

Now I'm going to put this a different way.  The class is heterogeneous regarding comfort with the type of math we used in this class.  The math types or those who are considering going to graduate school in economics, are quite comfortable with the modeling.  Other students are not.  Can the others still benefit from the Excel homework?  I don't have a good answer to that question.  But I do want to note that in class yesterday I suggested trying the Excel homework again, with a different alias, and see the second time through if you're comfortable with the material or if it is a struggle.  Practicing on the homework this way should make you more familiar with the model and improve your confidence for the final Moodle Quiz.

I want to note the following, which is not about our course per se but about having facility with models.  When I was a campus administrator, I would make simple models of the situation on the fly.  It helped to discuss the situation with colleagues.  I don't know that other administrators did that, so I'm pretty sure it was my economics training that made me feel the need for doing it.  This is different than applying pre-existing models that you've been taught, though the supply and demand paradigm is quite useful in this way; sometimes a pre-existing model can help.  But mainly it was doing something from scratch, keeping it pretty simple, and then knowing how to get some implications from that.  If you can develop that skill, it might help you when you reach the managerial rank.  It probably won't help at all, in your initial position, though you might get a better sense of what your company is doing by trying to have a model fit the situation.

Tuesday, December 10, 2019

My schedule after today's class session

I plan to start working on grading the blog posts for the second half of the course (and the comments too) sometime tomorrow.  I've got non-school things to work on this afternoon.   When that is done I will upload grades, including the last Excel homework on the Shapiro-Stiglitz model.   I don't know how long that will take, but I will make an announcement to the class after doing this.

If you'd like to meet with me for whatever reason, I'm happy to do that.  Morning are probably better for me, but if you need to do that in the afternoon, we'll figure something out.

Regarding final grades, I will try to do them on the December 18, after the last Moodle quiz.  Again, I will make an announcement to the class site when that is done.

As an FYI, instructors got a massmail yesterday from the Registrar, which said that the last time for entering final grades is January 3, at 2 PM.   One of the things we talked about early in the semester but then didn't follow up on is scheduling.  When Final Exam Week ends so close to the winter holiday, you get a deadline like this after the Christmas Holiday.  This makes no sense to me, but if you don't get a grade in one of your classes, this may be the reason why. 

Sunday, December 8, 2019

Consider Moving to Finland

This piece is an interesting read and might provide a good backdrop for considering the 2020 election.


A Few Oddities (Instead of a Quiz)

Longest Palindrome in English - A palindrome reads the same forward and backward (ignoring the punctuation and capitalizations).

Doc note.  I dissent.  A fast never prevents a fatness.  I diet on cod.

Paul's Law - Very useful for parents with young children.

You can't fall off the floor!

Theorem:  All horses have an infinite number of legs.

Lemma:  All horses have the same color.

Proof of Theorem: Take your average horse. It has two hind legs and forelegs. That makes six legs. Six is an even number, but it's an odd number of legs for a horse. The only other number that is both even and odd is infinity. So a horse has an infinite number of legs. You may say you can find a horse with other than an infinite number of legs. But by the lemma - That must be a horse of a different color.

Thursday, December 5, 2019

From Today's Chronicle of Higher Education

In the last class we discussed examples of the triangle problem.  One of those happens at Universities, where the marketing arm has one view of what the university should be putting out there for public consumption while the faculty and students have quite other views.  It's a mere coincidence that this piece appeared so soon after making that point, but it's pretty telling (and it is about a different U of I, not us).

You should be able to access this piece if you are on the campus network.


Monday, December 2, 2019

A few different announcements

Reminder: The last Excel Homework is due this Wednesday evening and is on a modification of the Shapiro-Stiglitz model where the monitoring intensity becomes a choice variable of the firm.  The post on that homework has a link to the Excel file.  That is where you should post questions, if you have any.  Please don't post questions about that homework to this post. 

Reminder 2: The last blog post is due this Friday.  The prompt was given on the Friday before the break.  For your convenience, it is reproduced below.

Note: This is being assigned the Friday before the Thanksgiving break, but the post isn't due until two weeks later. This is the last blog post - You have two options to write to. The first is the prompt I've used last year and in all prior years.  The second is to do a Williamson-like critique on our class based on two governance decisions that were made. One of those decisions was to not require attendance. The other was to allow soft deadlines. 

 1. The traditional final prompt: This is the last post to be done for the course. I'd like it to be both a review and a critique. Can you offer up some lessons learned from the course about Organizations that you didn't have already going in? What about the pedagogic approach we took with the way the live class was structured and the online blogging. Are there any take aways from that? Please spend a bit of time talking about your process for doing the blogging and the Excel homework -including the preparation you do and how long it all takes. Finally, talk about things you would have liked to see in the course but didn't or ways the approach might be improved. 

 2. Williamson-like critique The two rules to focus on are: (a) that attendance was not required and (b) that deadlines were soft. Please describe how those rules impacted your own behavior. Then consider how the rules impacted the class as a whole. Finally, if you were to recommend changes in the approach, how would you modify these rules to produce better outcomes?

Last Moodle Quiz:  The final exam schedule for our class is below. 


So I've scheduled the last quiz in Moodle to include the scheduled time within the 36 hours that the quiz will be available.  It will open at 9 AM on Monday, 12/16, and close at 9 PM on Tuesday, 12/17.  

As I write this the campus wireless is down, but Moodle is up.  I'm keeping my fingers crossed that there will be no technology issue then.

Grades Uploaded Into Moodle

I just finished a grade upload.  In the Excel category there was the Principal-Agent Homework and a bonus item - added because the total for the category should be 200 points.  In the Blogs category I tracked the last two posts - one on Conflict, the other on the Triangle Principal-Agent Model.  In the Concept Quiz category there were two items uploaded.  The quiz on Conflict, and a bonus item to make the category total to 100 points.

End of Holiday Quiz

Many of you have an IT interest so I thought this one was appropriate.

Q: How many software engineers does it take to screw in a lightbulb?
A: None.  It's a hardware problem.

I got this one from my son, who is a software engineer.  If you want to contribute jokes to the class collection, you must get over the bar set by this joke.  (I hope that doesn't discourage you.)

Monday, November 25, 2019

Has anyone in the class seen, A Beautiful Day in the Neighborhood?

If you have seen it (a description is here) I wonder whether you liked it and, if so, why.  I'd also be interested to know if you watched Mr. Rogers at all when you were a kid. 

This past weekend I've read several pieces that are related.  In the New York Times Magazine there was a long piece about The Mr. Rogers No One Saw.  Within that piece there is a link to another Magazine piece about Tom Hanks, who plays Mr. Rogers in the movie.  Apparently, Tom Hanks is a really good guy, off the screen as well as on it.  The article is called, This Tom Hanks Story Will Help You Feel Less Bad.   The there is the article from 1998 in Esquire Magazine on which the movie is based called Can You Say...Hero?   I'm guessing this is getting such a splash now because people are desperate for some good news.  I did find it heartwarming to read these pieces. 

Sunday, November 24, 2019

Holiday Quiz

This one is about Star Trek, the Original TV Show, the Motion Picture,  and the various sequels.

Q: How many ears does Captain Kirk have?
A: Three.  The left ear, the right ear, and the final front ear.  ;-)

Happy Thanksgiving.

Thursday, November 21, 2019

Excel Homework Due December 4 at 11 PM

This is the last Excel Homework. 

This homework is on extensions of the basic Shapiro and Stiglitz model, with a particular focus on making the monitoring intensity a choice variable. 

You should watch the video presentation of the basic model first. This is a full lecture on the math of the model. It takes about a half hour. (If you want the PowerPoint file, a link to it is in the description of the video.) 
 
The actual Shapiro and Stiglitz paper: http://www.jstor.org/stable/1804018 
The video that derives the equations from the paper: http://youtu.be/upUrdaLNIss 
xlsx file: https://uofi.box.com/s/cyuy1v6kfs8dfl3n43kopbp801n79sbo

Today's Quiz

Then there was the Bigger family with Mr. Bigger, Mrs. Bigger and baby Bigger.

Q: Who was bigger?
A: Baby Bigger, because she was a little Bigger.

Links for Today's Class Session - Nov. 21

In lieu of making a video, which I still might do later, I will talk through these links in class today.

Firm Reputations and Product Quality

Klein and Leffler - The Role of Market Forces in Assuring Contractual Performance

Name Brands - Peanut Butter, Vintage Skippy Commercial
Bleach,  Is store brand bleach different from name brand?

Price premiums and repeat purchases - name brands have established reputations.

Deferred Compensation - Seniority Component to Wages

Why Is There Mandatory Retirement? Edward Lazear

A Redrawn Figure 1

A Model of Efficiency Wages as a Signal of Firm Value Arvan and Esfahani



Monday, November 18, 2019

Today's Quiz

They are selling academic brains in Heaven.  Historian brains are $10/ounce.  Physicist brains are $8/ounce.  Economist brains are $1,000/ounce.

Q:  $1,000/ounce!  Why so expensive?
A: It takes a lot of economists to get an ounce of brains.

(Supply side humor.)

Some Links for Class Session on November 19

The video posted for the class last Thursday got very few views.  So rather than make another one, with quality content, I'm going to content myself with annotating the links below.  On Thursday we're going to look at a model of deferred compensation as a way to provide incentive, an alternative to pay for performance.  For that model, I will make a video.

Assessing Classroom Quality - This piece is very recent. I'm on the listserv for the Tomorrow's Professor and the email came this morning. You might read through this piece to assess yourself as a learner.  It's good to see others talking about the broad strokes learning goals, so you don't think I'm coming out of left field.

The Executive Mind and Double-Loop Learning by Chris Argyris - If you are on the campus network you should have access to this piece.  We will discuss this piece some in class, as an extension of Bolman and Deal Chapter 8.  What's made more evident in this piece is that executives maintain implicit assumptions about how the world works and they themselves may not be aware of those assumptions.  But those assumptions come out in analyzing a situation.  Double-Loop Learning can then be though of as identifying those implicit assumptions and asking whether they are accurate or not.  If not, they really need to be changed.  That's not easy to do, but being aware of this is surely a first step in the process.

The Reflective Practitioner by Donald Schon -  This is a good read and worthwhile for you during the winter break.  I like the description of the book, where the emphasis is on intuition, not technique per se.  The question is, how does intuition develop and as a learner are you in tune with developing your own intuition.

MBTI Basics - While I've learned recently that Myers-Briggs personality typing is not completely up to snuff regarding current social science standards, I do think it useful in understanding that people truly are different (not better or worse, just different) in how they go about solving a practical problem. For example, some people like to make lists.  I'm somebody who does not like this.  Sometimes it is easier to get along with people who are the same type as you, but the group can benefit from having diverse types, to get different perspectives on a problem.  For the record I was tested back in 2003 and learned then that my type is INTP.  One of the issues with this typology is whether it is stable over time.  If I were tested now, would I turn out the same way?  The problem is compounded by the fact that knowing your type you can guess as to how your type would answer the questions, which might not be the same as how you'd answer the questions without applying this criterion.

Thursday, November 14, 2019

The Second Moodle Quiz Starts Tuesday

It will be based on the Excel homework since the first quiz.  I'm seeing that quite a few students haven't yet done the Principal-Agent Excel homework.  I encourage you to get that done before taking the quiz.

Today's Quiz

In France they make an omelette with only one egg.
Q: Do you know why?
A: Because in France one egg is un oeuf.




Wednesday, November 13, 2019

Considering the Principal-Agent Model

This is the video I promised in the previous post.   It is intended for you to watch after you have completed the Excel homework on the principal-agent model which, in turn, expected you to watch a different video, on the algebra of the model.  The only reason I'm posting it now is that some students have already completed that homework.  If there are questions about the homework after having done it, or questions about this video, that is a reason to come to class tomorrow, to pose those questions and hear the responses to them.

Note that the Powerpoint on which the video is based is unlike those I posted at the beginning of the semester.  There are no images, only text.  And there is no content in the Notes pane.  This enabled me to make the presentation quickly.



PowerPoint file

Tuesday, November 12, 2019

My Moral Compass and Some Observations about Our Class

Today in class in discussing ideas behind the blog posts on punishment and getting an under-performing employee back up to speed, we briefly discussed the notion of moral compass.  If a person is guided that way, what interventions might then make sense, as the person likely will punish himself for the poor performance.   I'm going to do a bit of that in this post.

First, you might listen to this video, a famous song by B.B. King.  It captures my current mood about teaching our class.


The explanation for why I feel this way is simple enough.  I don't see connections that students in the class should be making to what I'm trying to teach.  The metaphor is the lightbulb going off in your head.  Evidence of that happening might be found in your blog posts or in your comments in class.  But it largely doesn't seem to be happening, as far as I can tell.

I'm quite willing to accept the blame for this outcome.  A younger teacher, one more in tune with the issues that are important in your lives, almost certainly would cast the course quite differently - both subject matter and method of instruction.   That said, I would be interested to know whether you are connecting well with the material in some of your other courses.  I'd appreciate a comment on this post or in an email if that's the case for you.

Also, in some ways I'm a pretty stubborn person.  The previous offering of the course, in 2017, did have some incentive built in for students to attend class which was there for about 3/5ths of the course.  After the incentive was taken away, attendance dropped off precipitously.  So, in some sense that many students in the class have made it essentially a distance learning course is not a surprise.  My stubbornness fits in here in that I really did want you to grasp the importance of working in a collegial environment - what we have been referring to as gift exchange - and learn this not just cognitively but experientially as well.   And in my view of how you should learn, your experiences precede my interventions, which are mainly about your reflections on those experiences. For our class the biggest gift you could offer would be to attend regularly and then participate in class discussion.  Wanting that as a goal, I focused only on it, and not at all on how to get from here to there.  If I got you to attend class by requiring it and taking attendance, it no longer would be a gift.  It would just be another hoop you'd have to jump through. So I simply hoped the lesson could be learned without providing the incentive.  It's quite apparent now that was wishful thinking.

--------

This mea culpa leads to an obvious question - how should the course play out for the remainder of the semester.  Let me note that the Syllabus is a kind of contract.  Also, I signed an Offer Letter about teaching the class that the Econ Department sent me.  That is also a contract.  I will honor these contracts as best as I can, but I do want to make some changes that seem fitting under the circumstances.

1.  Since so many students are missing class discussion and thus not connecting the homework to the subject matter in a way I'd hope to see, I will instead make a video before each class, I hope no more than 15 minutes, maybe less, which will present the ideas as presentation, not as dialogue as I've been trying to do in class.  The video will be available to everyone, so in that sense the incentive to come to class will be even less.

2. I'm planning on Thursday to treat the live class session like office hours.  In office hours, the students drive.  If they have questions about the Excel homework, we'll review that.  If they have questions about the video, those can be addressed.  And if they have questions about anything else in the course, for example, the next Moodle quiz is next week, we'll talk about that.   We'll go as long as students have questions they want to have answered.

3.  I'm going to take a wait and see approach after that.  If the session seems effective, we might repeat the approach.  I would also be willing to entertain other suggestions of how to conduct class sessions, recognizing that we are now well into the semester.

---------

We talked in class today somewhat about emotions and people underperforming because they feel aggrieved in some way.  The last few weeks I've been alternating between being sad about our class and being angry about it.  I used to think that my unusual methods (at least for teaching economics) were sufficient to address the various issues you face as students.  Now it is clear that the methods are not enough, are possibly wrong headed, and further that I simply lack the energy I had a few years ago, where that might have been an important factor in pulling this off.   The truth is that now I want the semester to be over and to focus on other things.  Let's try to get there as best as we can.

Links and Ideas for Class Session on November 12.

Definition of punishment from Dictionary.com

Paper topic from Philosophy of Law class (fall 1975)  - Is punishment necessary for the Law?

In general students argued for mild punishment or no punishment and a discussion instead of a harsher discipline as an alternatives.  Let's reconsider this post as a test of this view.  Does a mild message really work?  What sort of batting average does it have?

Main reasons given for why somebody was disciplined given in the blog posts

1.  The job was boring or otherwise tiresome.  The person started to shirk as a consequence.

2.  The person was incompetent at the job, perhaps because of a lack of experience.  So the person made mistakes.

3.  The person had some character flaw and didn't seem to care about the work.

Many students were against singling out an employee in a group work setting.  Very few students talked about disciplining one employee as sending a message to everyone else.

Also, many students didn't distinguish an angry manager who was disciplining as an expression of that anger from a manager who had calmed down, thought it through, and was disciplining as part of the employee's education.  This begs the question, how does one manage one's own anger at work?

Progressive Discipline

Konrad Lorenz On Aggression

Nurse Ratched One of the main characters in One Flew Over A Cuckoo's Nest

Google's Ideological Echo Chamber James Damore - Are big tech companies hostile places for women to work?  Is the brogrammer culture actually productive or is it simply fraternity life on steroids?  (Damore was fired from Google for publishing this document.  He is suing them for wrongful termination.)

The Fear of Emasculation - One of my blogs posts that analyzes some of Damore's argument, and gives it a larger context.  Tying this back to the topic of student blog posts - the issue is whether these fears have productivity consequences by making the work environment uncomfortable for co-workers.

Grades Uploaded Into Moodle Nov. 12, 2019

The upload includes two Excel homeworks, insurance under adverse selection and bargaining, the last two blog posts, and the concept quiz on procurement.

Monday, November 11, 2019

I am planning on having class tomorrow

If our class was scheduled for this afternoon, I would cancel it.  The snow seems to be sticking now, but with water underneath that is probably partly ice.  This is just the type of weather I'd like to avoid.

The forecast for tomorrow is for much colder temperatures.  It won't be fun, to be sure, but it shouldn't be slippery.  So we're on as usual. 

I hope you stay warm and bundled up in the meantime.

Sunday, November 10, 2019

I made a mistake in the class calendar

This Tuesday we will talk about the issue of a worker who is not performing up to standard and what might be done about it.  We will take varying approaches - philosophical, learning, and the experiences that students posted about.  We will also talk about progressive discipline - the recommended practice.  A few people hinted at this, but nobody really worked it through.

A week from this Tuesday we will talk about conflict in the workplace and about leadership.  I mistakenly had that for this Tuesday.  My bad.  Some people did the concept quiz early, as a result.  I hope that is not a big deal.

Thursday, November 7, 2019

Excel Homework Due Nov. 13 at 11 PM

Please watch this video first. It gives the algebra of the principal-agent model and will make you comfortable with the notation and the basic ideas.  The PowerPoint on which the video is based can be downloaded from the description of the video.

Then do the Excel homework, which does the same analysis but this time with a graphical approach.

Some Links for Class Session on Nov. 7

The elements of monopoly pricing under linear demand and constant marginal cost.

The Bargaining Problem John Nash

The Diffeq From Hell

Tuesday, November 5, 2019

Some Possible Lessons for Us from Movies and TV

Recently I've been watching a series on Netflix called The Kominsky Method.  The lead character, played by Michael Douglas, is a former well-known movie actor, who now runs his own school for fledgling actors to teach them their craft.  He's also quite an old man.  And his agent, played by Alan Arkin, is even older.  The show is a comedy, which a mixture of old-man humor and the humor in teaching students when there is such a large age difference between them and the teacher, also humor about acting in particular and the need to be original rather than simply to a remake of what somebody else had already done. I found all of this interesting and somewhat related to our class.  It occurred to me that we should turn our class into a comedy or make a comedy about our class?  If anyone has ideas on this score you can write them in a blog post rather than write to the current prompt.  If you do this, have fun with it.  I think we all need some levity now.

The other item is an opinion piece by Martin Scorsese in today's New York Times.  Scorsese is a very well known director.  Recently, he had given an interview where he commented, "Marvel movies are not cinema." That caused quite a stir.  The opinion piece explains and defends that comment. While Scorsese is 12 years my senior, we both grew up in Queens, New York, and quite likely have similar sensibilities on a variety of matters as a consequence.  If you read this piece, you might find it remarkably similar to what I argued in class on October 29, that blockbusters have crowded out the more interesting movies.  I will say there is one part of Scorsese's argument that I don't buy into.  He says that movie makers want to have audiences watch their movies on the big screen in theaters.  If I were half my age, I might agree with that.  For me, however, I want to be physically comfortable when I'm watching something that might interest me.  That often doesn't happen when I'm at a theater.  I'd rather be sitting in my own furniture and on my own screen, so I can be comfortable.  And dare I say this, it matters to me that I can pause the movie when I need to, for whatever reason.  That caveat notwithstanding, the rest of what he wrote gave me a sense of deja vu.  If you read his piece and you were in class on October 29, I wonder if you experience a similar sensation.

Some Links for Class Session on Nov. 5

Review of Second Worksheet on the Adverse Selection Excel Homework

Does Studying Economics Make You Selfish?  (NPR Morning Edition)

Does Studying Economics Inhibit Cooperation (article by Robert Frank, et. al.)

Evidence of a Toxic Environment for Women in Economics (NY Times piece)

Is Giving the Secret to Getting Ahead? (NY Times Magazine piece by Adam Grant, a psychologist)

What Straight-A Students Get Wrong (Another piece by Adam Grant)

A schlub in a business school  (A blog post I wrote back in 2008, when I was an Associate Dean in the College of Business and in the then new Business 101 class they were trying to teach professional responsibility.)

The Fear of Emasculation . (A more recent blog post written in the wake of the James Damore memo at Google and the protests in Charlottesville.)

Monday, November 4, 2019

For Submitting The Key in the Bargaining Homework

If you've already done the assignment but it sent you to a form for 2017, that was the old link, which I failed to update.  This is where you should submit the homework.
https://forms.gle/VXtUikFkcvJ1TnQ46

I will update the Excel Homework now so students who have yet to download it will get the correct link.

Sorry for my absentmindedness.  It's what happens as you get old when there are too many different points of stress.

Thursday, October 31, 2019

Course Policy on Bad Weather

While it is pretty icky outside now, at least the snow is not sticking ---- so far and the pavement, while wet, is not icy.  So we had regular class today, though attendance was down.  If, however, the temperature were a couple of degrees lower and I knew it would be that way the evening before, I will alert the class

I polled the students who did attend today on this matter.  They requested email notification.  That's what I will do and I will put the same message on the class site as an announcement. 

Happy Halloween and here is to a warm rest of the semester.

Excel Homework Due Nov. 6 at 11 PM

The homework is on bargaining. Note that M&R have a discussion of bargaining in Chapter 5. You should read that. The model they go through has both the buyer and seller having two types. In the Excel homework, the model has a continuum of types on each side of the bargain. In that sense it is harder but also more elegant. And, I believe, it should give you a better understanding about the relationship between the private information and the inefficiency created.

There is a fiction in the model that helps to understand what is going on. The fiction is that there is a third party - an arbitrator - who provides rules for how the bargaining will happen, when trade will occur, and at what price. The fiction is necessary because the model is static. Real world negotiations happen over time and to model that correctly one needs a dynamic model. There are such models, but they are well beyond the scope of our class. So we will keep the modeling relatively simple and wave our hands about what happens in real world bargaining.

There is a rather extensive discussion in this homework before you log in. I encourage you to read that carefully and not gloss over it. It is about how to bargain well and what happens in real-world procurement, which entails a good deal of such bargaining. There are practical lessons here that you can carry over to your work life, even if you don't engage in procurement. To encourage you to read that part, there will be a concept quiz due the morning of Nov. 7, before class, that focuses on the procurement section.

A few links for today's class session.

Graphs for the Excel Homework

Adverse Selection in Health Insurance

An Exact Consumption-Loan Model






Tuesday, October 29, 2019

Some follow up to today's class session 10-29-19

I'd like you to consider two different but related scenarios. 

1. You've already begun doing an Excel homework, or writing a blog post for the class, or doing a quiz in Moodle for our class.   What does thinking about your course grade at that juncture do to how you are performing in your task?  Is it a distraction or an enhancement?

2.  You've not yet begun doing some coursework that is due in the near future.  What does thinking about your course grade do regarding getting started on the coursework?

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Now I'd like you to speculate/generalize on your conclusions above.  Professional athletes and movie stars typically have agents.  The agents facilitate contract negotiations and also facilitate identifying the next party to negotiate with after the previous contract has expired.   An agent takes a pretty hefty cut of what their client gets in the next contract.  So it might seem the stars might make more money if they did these negotiations themselves.  Yet that rarely, if ever, happens.  Can you explain why?

Monday, October 28, 2019

Grades Updated in Moodle

Three items were updated:

1. The Excel homework on the Math of Risk and Risk Preference,
2. The Blog Post on Managing Future Income Risk, and
3. The Concept Quiz on Risk Preference.

Sunday, October 27, 2019

Some Sobering Thoughts about Economic Incentives

The authors were selected for Nobel Prize in Economics this year.  They know their stuff!


Some Links For Class Session On Tuesday October 29

Musical PowerPoint (Developed back in 2012 for the course.  I opted not to use it this semester but then I thought it might be a good gateway into students talking about their current listening to music, both the technology and what they listen to.)

Q: Does the technology impact the content?

NY Times Writers on Writing
E.L. Doctorow on how the movies influenced the novel.  (He laments these changes.)

Dire Straits song Money for Nothing.  (A similar lament about how MTV impacted music.)

Has something similar happened with the movies? 

Professor Arvan on Really Good Movies and Blockbusters

Q: Are there more bad movies made now than in the 1970s?  Are there too many movies being made based on comic books?

Q: Do those providing finance for a movie have a good sense whether the movie will be a success or a flop?  When is it economically rational to invest in a likely flop?

Saturday, October 26, 2019

In case you are looking for Halloween ideas for economists

This picture is from 1955.  Arnold Harberger is in a get up as Triangle Man.  This was in the first course in graduate microeconomic theory at the University of Chicago.


Thursday, October 24, 2019

Some Links And A Simple Model Of Labor Productivity - For Class Session October 24

A Mature View of Uncertainty (Ten years ago I got about halfway in writing a book on teaching and learning.  The book title was Guessing Games.  The underlying idea was that we should mainly teach students to hone their own intuition - making good guesses.  But then we need to also teach the accompanying skill of verification and follow up on the intuition.  This is the last chapter that I wrote.  I think it's not badly written, but on reading some earlier chapters, they were too pedantic.  I was lecturing to the reader, not a good approach to sustain interest.  So I stopped writing this.)

This is long read, maybe 45 minutes or so - but there is no blog post due this weekend. It talks about uncertainty in many dimensions, beyond how economists thinking about it.  Ultimately the focus is on the choice (or not) to quit the current job and take on something else.  What are the factors too consider?  Here I'll mention do - the emotional side, how nervous are you about making the change? how miserable are you with the current situation?  and that we don't really decided things by data, but rather by a good narrative - what story can you tell to convince yourself about the choice?

Moneyball (the book, not the movie)
The interesting part for us is that scouts for major league baseball teams make errors in evaluating talent.  The errors are systematic.  (Or at least they used to be before the book came out.)   We should attribute such errors to cognitive bias.  This suggests, more generally, that in the labor market recruiters may make errors in evaluation talent because of cognitive bias. 

The Financial Perks of Being Tall
A well studied consequence of cognitive bias.

Randy Newman song - Short People
An ironical lyric that plays into the cognitive bias and implicitly criticizes our many other prejudices.

Favorites versus Underdogs
For the mathematically inclined.  If the objective is to maximize the chance of winning, then the favorite should risk averse while the underdog should be risk seeking.

Simple Model of Labor Productivity

Q = F(a,h,e)

where Q is the individual's output, a is the individual's ability, h is the individual's human capital, and e is the individual's effort.    Note that each of these variables may themselves be multi-dimensional.  For example, we've already spoken of general human capital (which is valuable with any employer) and specific human capital (which is valuable only to the current employer). 

How does moral hazard manifest in each of these job types?




Is procrastination moral hazard?

Excel Homework Due Wednesday October 30 At 11 PM

This homework takes the insurance model we did in the last class and applies it to Akerlof's Market for Lemons, which is a very well known approach to Adverse Selection (hidden information).  Depending on the underlying distribution over types, the competitive market may not work very well in this instance - the bad risks drive out the good risks. 

The economics here is more sophisticated, because there is a possibility of a pooling equilibrium or a separating equilibrium and students may not understand what determines which will occur.  We will discuss this in class, after the homework is due. 

If you have questions about doing the homework itself, please post them as comments on this post.

I want to note two bits of reality that aren't in the model in the homework. 

(a) In the homework it is assumed that the insurance company faces no costs in issuing a policy nor costs in administering the coverage when loss occurs.  Under this assumption, a competitive market will produce equilibrium policies where the fixed load, F, is 0.   More realistically, you should consider that F is positive, to cover these type of costs.  In that case the good risk type really might buy no insurance whatsoever.  Our model doesn't predict that but instead predicts that the good risks may get only a little coverage.

(b) In the homework it is assumed that regardless of type the insured can afford to pay the premium.  (We would say the insured is not liquidity constrained.)  But in reality, fair insurance premiums for bad risks may be too high for people to afford.  So rather than buy full coverage, as in the case of a separating equilibrium in our model, the people will go entirely without purchasing insurance. 

Of course, you can model both of these considerations, but then the model itself becomes much harder.  So the homework is suggestive of what happens, without giving the full picture.

Monday, October 21, 2019

Lecture Tomorrow

Please note that tomorrow I will present the basic insurance model and do so in lecture format.  I have decided to do that live rather than as a video, in part so you can ask questions then and there.  This model will underlie other models well will consider over the next several weeks.  The homework that is due a week from this Wednesday, on adverse selection in insurance markets, depends on it.  Another homework on the principal-agent model can best be understood as a variant of the insurance model.

At this point it seems most of the class has yet to do the Excel homework due on Wednesday evening, which really should be preliminary to the insurance model.  I'm going to push ahead anyway, in part so students get a chance to see where we are heading and in part  because we really need to get this done.

Thursday, October 17, 2019

Comments First Half Grades Uploaded

Here is an explanation for how your scores were determined.

First, only a few students diligently commented on the posts of other students, which was required in the syllabus.  The students who did this ended up getting the maximum number of points, 50 points.

Second, I needed to figure out how to give credit for those students who did respond to my comments on their own blog.  What I ended up doing, was to give 9 points for each post they commented on.  This would give a maximum of 45 points, obtained if the students commented on each of their posts, and less if they missed posts where I did comment.

I want to acknowledge that on some posts a few students wrote multiple comments and some wrote very long and impassioned comments. It is good to demonstrate such enthusiasm and I thank you for doing it.  But in terms of accounting for it in the scores, I didn't. 

Do note that commenting on other students posts is still certainly okay to do, but there won't be points assigned for it in the second half.

Tuesday, October 15, 2019

Grades Uploaded Into Moodle

This grade upload includes the scores you were assigned on the blog posts first half, comments on those, and then 100 points bonus that I gave everyone. 

I did not upload the tracking of the most recent post on connecting the dots.  Given the scores I gave that seemed redundant to do. 

I have also yet to give you scores for the comments first half.  I'm pretty tired now so will get that done when I'm fresher, on Thursday.  I will be out of town tomorrow.

Anonymous and Unknown Comments

As I'm going through the blog posts I'm seeing comments from Anonymous or Unknown.  When that happens on your own blog, I believe I can figure out that it is you posting.  When it happens on somebody else's blog, then it is too hard for me to figure it out.  

If you want to get credit for those comments, you will need to claim them as your.  Send me an email with a link to the post.  I know this is a hassle, but think how I feel about it.  You were supposed to use your alias when making comments.  That would clearly identify you (to me).  

Updated Syllabus - No More Commenting On Other Student Posts

You should still comment in response to my comment.  Here is the new point allocation to put this into effect.

Blog Posts First Half (150 points - 5 posts (not counting the one about your alias) for 30 points per post).
Blog Posts Second Half (210 points - 7 posts for 30 points per post.)
This gives the same total points for the Blog posts as was allocated before.

Comments First Half  (50 points)
Comments Second Half (50 points)
Bonus (100 points) - everyone gets this automatically.
This gives the same total points as what was allocated for Comments in the original syllabus.

Monday, October 14, 2019

The Nobel Memorial Prize in Economics.

The award was made for development economics.

Links and ideas for class session on Oct. 15

First Class Session - Slide 16

Online Writing Lab at Purdue (General Writing)
The section on procrastination is quite good, especially if you've been struggling to get the blog posts done. The other sections are also useful.

The Inquiry Page
The U of I is a research university.  Researchers take an inquiry approach in going about learning.  Inquiry is depicted as an ongoing cycle rather than as getting to an end point.  Students in many undergraduate courses don't see such an inquiry approach. It might help students to know that we're trying for such an approach in our class.

Writing to Learn (Donald Murray)
Murray was a journalist who had a good deal of insight about how writing as a process is part and parcel of thinking and learning.  The core idea is that thinking is sequential rather than one big Gestalt.  You don't have the whole picture at first.  You work through something.  Then after a while something related occurs to you. I like to imagine a piece of paper folded many times over.  Each juncture is an unfolding. You see more of it after that.  The goal is to see as much as you can. Those who found the reflection of value did so because they saw things about the post that they didn't see while they were composing it.

Suggestions for the Blogging in the Second Half of the Course

1.  Break your post into two parts.  Part a would be a reflection about the post in the previous week, like the reflection you just did.  Part b would be writing to the current prompt.  Part a can be any length.  Part b should still satisfy the 600 word minimum requirement.  So this is not for making it easier to satisfy the requirement.  It is for making reflection a more regular part of your thinking.

2.  Write a paragraph about the prompt.  Why was it selected?  What's the purpose of the prompt?  Do this before you try to address the prompt.  Then write your post.  Go back to the paragraph and see if you still agree with what you said there or not?

3.  Consider writing to your own prompt.  This is a way to direct your own inquiry.  Do note that you need to write a paragraph in this case which ties what you are writing about to course themes.

Please Look At The Items Here Before You Start the Excel Homework Due Oct 23 at 11 PM

Each of these should be reviewed before doing the next Excel homework, which assumes that such a review has been performed.  They should be familiar already, based on what you've been exposed to in Econ 202 and 203. There may be some new stuff on risk preference. I'd be curious to learn what is old hat and what is new for you. Note that there is a bit of overlap between each of these. Nonetheless, I strongly encourage you to review them all, so you have a firm understanding of the fundamentals. The second one emphasizes an algebraic approach. The third, a graphical approach. You should be familiar with both.

Notes on the Math and Philosophy of Probability  (This is a pdf file.)  There is a slight error in this - a line I attributed to Keynes actually comes from Mark Twain.  Otherwise, it is pretty basic stuff.

Increasing Risk and Risk Aversion (This is a video in YouTube.  You can find a link to the PowerPoint file on which it is based in the description of the video.)

Expected Utility and Jensen's Inequality (This a video in YouTube.  You can find a link to the PowerPoint file on which it is based in the description of the video.)

You should be able to get through all of this in under 45 minutes.  Of course, the less familiar it is to you, the longer it will take to get a good understanding.

The last bit on expected utility is based on the book by John von Neumann and Oskar Morgenstern called Theory of Games.   Maximizing expected utility is what economists think of when they refer to economic rationality.  The Behavioral Economists have shown that most people don't behave according to this theory.  Even professional economists don't always behave as the theory says, but they are more likely to be rational this way than the rest of the population.

Friday, October 11, 2019

Some follow up to yesterday's class session.

This is the PowerPoint presentation I used

I did a tiny bit of research on duration of Patents and Copyrights in the U.S.  It looks like the patent term is now 20 years, so I was wrong about that.   The copyright term is life of the author plus 70 years.  Note that when the author is doing that work as an employee or as a contractor, the copyright is owned by the hiring company.  Also, it is my experience that companies are very quick to use non-disclosure agreements about anything they deem interesting and innovative.  Given that, you might ask how companies incentivize employees to be innovative. 

I will add here that faculty (not the university) typically own the copyright to their research papers.  Then the normal exchange is to assign the copyright to the publisher when the article has been accepted in a journal within the publisher's sphere.  Before the Internet that was uncontroversial.  Now it is pretty common to find articles that are under copyright made publicly available by somebody other than the publisher.

Regarding another example of change that doesn't improve things, though it is intended to, consider the use of Banner for doing course registering.  Before there wasn't any online system for registering, the phenomenon of course hoarding didn't exist, because to drop a course was an onerous process.  Once that became easy, you have this pernicious development. 

Progress may have excellent benefits for most people, but it also can produce unanticipated side effects.  We should be aware of both.

Thursday, October 10, 2019

Please get your blog posts due tomorrow in NO LATER THAN SUNDAY!

Soft deadlines notwithstanding, this is not a good time to be tardy with your blog posts.  This one is on Connecting The Dots.  For your convenience, the prompt is reproduced below.

Connecting the dots - This is a chance for you to read through your prior posts and then try to answer the following questions: (1) Are the themes from one post that tie into other posts? if so, what are those connections? (2) Aside from addressing the prompt are there ways to connect what you wrote about to course themes? Were there connections that are more obvious to you now than at the time you wrote the post? if so, can you elaborate on that? (3) Has your process for writing these posts evolved? Please explain how that has come about. (4) Now put yourself in the position of writing the prompt (this one or other prompts for future posts). What would you like to see? Can you give some reasons for that.

Wednesday, October 9, 2019

Some follow up to yesterday's class session.

On Class Scheduling and Excess Demand for Some Classes

In our discussion we did not consider other factors that might influence student demand for a course.  These include the time of day the course is offered and whether the offering is contiguous to another class the student is already scheduled to take.  I don't know if this is a universal preference or not, but I've learned from students in the past that they prefer having classes back to back, which gives them more free time of their own. 

Given the above, perhaps one way to manage excess demand in popular courses is to schedule them at 8 AM.  This would be a deliberate attempt for the scheduling itself to screen out the non-serious students, knowing that 8 AM classes are not high on the preferences of most students.  There might be another reason for scheduling more 8 AM classes.  As enrollment growth continues to happen, it is university strategy now to encourage that growth,  classrooms will become increasingly scarce.  We did talk about moving demand from the peak to off the peak, but we didn't do that with respect to class scheduling.  Insisting on more course offerings at 8 AM would be a way to do that.  It would require for the expectations of students to change, in a way they might not like at first.  I wonder if it became the usual practice whether students would get used to it. 

Now let my suggest a hypothetical that would offer an alternative to the current course registration process.  Instead, students would submit their preferences about what courses they would like to take, what courses they need to take for their degree requirements, and other related preferences (courses in the same building, preferred times,  and perhaps other factors as well.  Then an algorithm (something like the Medical Intern Matching Program) would produce initial schedules for all students.  The regular add/drop process would follow after that. Further, how the students did with their allocation in previous semesters would be tracked as follows.   Students who dropped courses after day 10, without getting the consent of their advisor, would have their priority lowered in the next registration round.  The idea is to punish the course hoarding approach.   The schedules that were produced by the algorithm would deliberately not be perfect from the point of view of their preferences.  In other words, if the campus deliberately went to an approach that emphasized 8 AM classes, then the burden of taking those classes would need to be shared.  So the algorithm would include this obligation, but then try to give students their first preference in some other course offering.

I want to close this section with a different observation.  When this class was taught at 11 AM, some students regularly came late to class.  I queried a few of them about it and among them many reported that they took another class before mine, which was on the Engineering Quad.  Getting from there to my classroom  took more than the 10 minutes allowed between classes.  So, in this case it seemed unavoidable.   This semester there are several students who are arriving late to class.  I'm guessing that for most of them our class is the first one in the day for them.  So, I'd like to know what explains the lateness and if there is any way to prevent it from happening in the future.

Ethics and Procurement

As I recently had to complete the University's mandatory ethics training, I want to note that it has specific prohibitions regarding accepting gifts from vendors, particularly those already doing business with the University and/or those submitting proposals under an RFP process.  Let me also note that it is pretty common business practice, including by units of the University, to give out tchothcke with the company's branding to clients and to potential customers.  Items include pens, tee shirts, coffee mugs, and squeeze balls (for reducing stress).  The practice is so widespread that an absolute ban on acceptance of this type of stuff seems foolhardy.   The University rules on not accepting gifts from vendors refer to "bribes" that are one or two orders of magnitude more expensive.   

But the reality is that in most cases the University can't monitor that these vendor gifts are being accepted.  So we should ask why a person in a position to grease his or her own pockets refrains from doing so.  I think it is easier to first consider the opposite.  If the person is angry at the University for feeling the person has been treated poorly, that mindset encourages accepting the vendor's gifts.  More generally, if the employer wants to encourage employees to act ethically, treating them well might be an effective approach.  One way to look at it is that the employee then fears loss of a good job, so the taking of the vendor gift comes with some risk.  A different way, however, is from an Akerlof gift-exchange point of view.  If the employee feels well treated, the employee is more inclined to honor the wishes of the employer. 

There is a temptation by regulators and policy makers to solve this problems via extensive rules that requires lots of monitoring and indeed may become so cumbersome as to be counterproductive.  My own view is that broad guidelines coupled with an approach that encourages trust in the employees is a better way to go.

Monday, October 7, 2019

Some Announcements

Reminder:  The quiz in Moodle begins after class tomorrow, at 11 AM.  It concludes the following evening at 11 PM.   It can be taken any time in between.  You are free to review your Excel homework while taking the quiz.  The grades on the quiz will be available after the quiz closes.

Drop Date/Grades for Blogging During the First Part of the Course

The deadline to drop is Friday October 18.  You'll want to know where you stand in the class.  So I will try to give you the points for your blogging in the first part.  This is not quite halfway (we didn't do blogging the first two weeks) so I need to figure out the proportional allocation of points possible.

This part takes me a while to do.  I will also provide a brief written evaluation of your work.  To do that I read through what you've written again and the comments your've written as well.   I will start doing this after the first few posts this week come in and I plan to devote a lot of time next Monday to this.  But I have an eye doctor appointment Monday afternoon.  I am planning on being out of town Wednesday of that week, so I hope I get it done before that. If not, I'll make some general announcement so you can get some sense of how your points are determined and how you will be evaluated. 

Ballgame Tonight

The Yankees play the Twins starting at 7:40 pm, which is pretty late for me.  I still haven't figured out whether I'll watch it live or tape it and watch it in the morning.   If the Yankees sweep, your professor will be a happy camper.


Saturday, October 5, 2019

Grades Uploaded into Moodle

There were two items added.  The Excel homework due this past Wednesday on Coordination Failures and Coordination Mechanisms and the blog post on Effective Teams.  I also updated some earlier scores for people who are trying to catch up.

Thursday, October 3, 2019

Some links for class session on 10/3

The Princess and the Pea

A blog post from me on my regular blogging site that gives some diagnosis of what's going on with our class (and with your entire program of study).

The Dead Grandmother Problem
I'm pleased to say not one student in our class has used this line.  But several have told me they are going to miss my class because they have a midterm in another class.  This does not compute for me me, though it must make sense to the students who are telling me this.   What is evident is that many of you feel you are under a lot of stress.  If that is a new thing, perhaps it will help your planning in the future.  If you've experienced it in previous semesters, however, maybe you should consider lightening your load.

Doing a Post Mortem
The core idea is to better understand yourself, both your process and your thinking, by looking back at how you performed and asking why your performance was as it was.

Analysis of Experiment on Tuesday
I encourage you to identify yourself among the results and then ask why you behaved as you did behave.  Take this as your baseline.  Not only should the efficient volume of trade been reached (3 units exchanged), but it is also reasonable to expect that the gains from trade be split equally between the buyer and the seller.  If that happened, then you did what the model predicts.  If it didn't happen, however, why didn't it?  When you've reached some conclusions from that, you can either leave them as a comment to this post, which makes sense if you are willing to make those conclusions public, or you can email me about that.   I will report back to the class with the aggregate results, but not try to single out any one student.

If you haven't ever seen The Bat and Ball Problem, you might try it first before doing your post mortem.  It might reveal some things to you.

Excel Tutorial
In light of so many students seemingly struggling with cell references on the most recent homework, I think it would be useful to go back to the Tutorial and do it again (but don't submit the key).  This is to ask yourself, whether you might have gotten more out of that exercise which would have prepared you better for the most recent homework.  As with the Experiment, you might comment on whether you got anything from the Tutorial or not and if not, why that was.

The most recent Excel homework
We'll cover that some today.  Some students are evidently struggling with the algebra that one must do to answer the questions. That is a different issue, we'll talk about ti some today.

The Blog Posts
After the post on Illinibucks due tomorrow, the next post wants you to reflect and try to connect the various posts as best as you can.  You can also use it to do a post mortem on your blogging.

About the First Quiz in Moodle

There is no Excel homework due next week.  Instead you will do an online quiz in Moodle that is based on the three prior Excel homeworks.

The quiz will be available starting at 11 AM on Tuesday October 8.   It will close at 11 PM on Wednesday October 9.  That is a hard deadline, enforced by the Moodle software.

I anticipate the quiz taking you under an hour, but if you want to take two or three hours that is fine as long as you submit before the deadline.  You have only one try at this.

There will be minimal feedback when you submit.  After the deadline you can see your score and which questions you got right, as well as the correct answers for those you got wrong.

One last thing.  To get more screen real estate when you take the quiz, click on the box with the three horizontal bars, which is just to the right of the I-mark at the the upper left of your screen.  The should get rid of the left sidebar and make sure all the information in a quiz question does show up.

Tuesday, October 1, 2019

A Little Bit of Math Humor


The Experiment We Did Today - Our Class versus Economic Rationality

Before getting to the commentary here are the results.  You can look at them for yourself.  Below is a summary.

In the complete information scenario Cases A, B, C, and E, produced 3 units of trade, the efficient level.  Cases D, F, G, and I produced 5 units of trade, above the efficient level.  Case H did not trade, but I need to be filled in as to why that was.

In cases A, B, and C, the situation was symmetric for buyer and seller.  Absent any other information about the traders, the prediction would be split-the-difference pricing, so the pie is divided in half.  That happened in case A.  In case B, the seller got a slightly greater share of the pie.  In case C, the seller got the whole pie. The prices equaled the buyer's values.  This is sometimes referred to as first degree or perfect price discrimination, which can happen what a monopolist with all the bargaining power sets the price, while knowing the buyer's demand curve exactly.

Case E, which also produced 3 units of trade, was not symmetric.  If there were split-the-difference pricing here, then prices would have declined, as the seller's cost was constant but the buyer's value was declining.  However, this solution opted for was a uniform price alternative, and that price was higher than the buyer's value for the third unit.  So the buyer made negative surplus on that trade.  Negative surplus on a trade is inconsistent with economic rationality.

For the other four cases, where all 5 units were traded, there were some trades that yield negative surplus.  So each of those also were inconsistent with economic rationality.  This is puzzling to analyze.  I wonder why it happened.  Also, it seemed some of you didn't try to maximize your own surplus and thus sandbagged on the experiment.  It would be good to know this was.

The particular trader who captured the most surplus under complete information was the case C

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Let's turn to the incomplete information case.  Here we had 5 cases with the efficient volume of trade and 4 cases where the trade volume was larger than that.   Among the cases that produced the efficient volume of trade, case 9 had one trade that produced negative surplus for the buyer and that buyer earned negative surplus overall.  In the other cases that produced the efficient volume of trade, all the trades produced nonnegative surplus for each side of the transaction.  That is consistent with economic rationality.

The overall surplus maximizer in the incomplete information case was the seller in case 6, but that is because this seller received hefty subsidies from the buyer, who lost out on every trade.

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The question I'm struck with here is why about half the class performed in this experiment like the theory predicts, but the other half performed in a way that was irrational.  I doubt that any student was deliberately trying to sabotage the experiment. (If you were, congratulations.  You achieved your goal.)  A more likely explanation to me is that some of the students weren't getting it about how they should behave in the experiment.

I would like to discuss that some in class on Thursday.  There is very little point in teaching something if the students never get it.  In contrast, sometimes a failure of this sort can be a stepping stone to doing things in a better way where students do get it.

You can't find that better way unless you do a full post mortem on the experiment and why things went wrong.  If you have thoughts on that you can leave them as a comment to this post. We'll use those as a launch point for the discussion on Thursday.

Monday, September 30, 2019

Notes on Budgeting and Transfer Pricing

To be discussed in class on Thursday 10/3.  These notes will not help you do the Excel homework due Wednesday 10/2 at 11 PM.  As long as you use cell references for the calculations, particularly in the case of an external competitive market, the transfer pricing part of the homework should not be too difficult.

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For the most part I'm going to use the U of I as model, circa 2004 since I had some awareness of how budgeting worked then, but before I do that, I want to begin with this hypothetical, meant to be humorous. 

A spoiled brat kid whose parents are rich is starting college.  The parents give the kid $10,000 as spending money during the freshmen year.  During the first week in town, the kid manages to find a high stakes poker game, at which he loses the entire $10,000 on one all-in hand. The next day the kid asks the parents for more money since how else will he get through the school year without it.  What should the parents do?

Sometimes budgeting makes you feel like a parent with a teenager who is a bit reckless.  Other times it makes you feel like Yossarian in Catch-22.  

“Just because you're paranoid doesn't mean they aren't after you.”

Now we'll stop kidding and get into it. Budgeting is typically done on an annual basis.  There are two basic types of funding model, and then there can be hybrids of these two.   The first is called funding off the top.  The second is called cost recovery.   With funding off the top, the source of revenue for the unit is from another unit at least one rung up in the hierarchy and maybe several rungs up in the hierarchy.   With cost recovery, the unit sells services of some sort to other units on campus.  The revenues from sales of the service are the source of funding.  Cost recovery is like transfer pricing, with the price at which the unit sells its service the transfer price.  The only real difference is that when talking about transfer pricing we consider the transaction between an upstream division that produces an intermediate product and sells that to a downstream division which uses the intermediate product to produce final product for sale on the open market.  Recall this diagram, which we already showed in class.  While it is true that cost recovery units are providing intermediate product of some sort, it is probably not right to consider the units that buy from them as downstream, selling their product on the open market.  So the analogy only goes so far.

With off the top funding, the budget is typically divided into two pieces.  The first is the total earnings of all people on salary in the unit.  This is typically a large fraction of the unit's overall budget, roughly 70% or more.  The other part of the budget is for everything else - wages for hourly workers, equipment purchases, expenditure on travel to conferences or for bringing in outside visitors or consultants, etc.

The critical thing is to understand how next year's budget depends on this year's budget. The typical approach is for for the campus to have some salary program, say 3%, so the revenues for paying salary are now 1.03 times what they were in the previous year. We will talk about how salary decisions are made in a moment.  The non-salary part of the budget remains flat, it is the same as what it was last year.   Among the bigger decisions that a unit manager decides is how to allocate salary among the members of the unit.  (But not for himself or herself.  The unit manager's salary is decided by the person the unit manager reports to.)  One way to think of this is to break the salary increase into two components.  The first is for cost of living.  The second is for merit raises.  Note that while often the staff expect a cost of living increase, that is not guaranteed.  But it is not possible to lower a person's salary (in nominal terms.  If there were high inflation then a salary increase less than the rate of inflation would lower the salary in real terms.)  If an employee gets significant merit increases over several years, the person probably is in line for a promotion, which means a change of duties and a bigger bump up in salary.  But those must be approved by the campus.

A cost recovery unit has the same approach to salaries, but now has to project future revenue to be able to cover paying staff and their salary increases.

A significant issue is what happens near the end of the fiscal year when:  (a) the unit is carrying a positive balance and (b) if it is running a negative balance.  Let's talk first about a unit that has no banking function itself.  With a positive balance it's use it or lose it or the unit tries to park the money further up in the hierarchy so it can use it in the next fiscal year. If the unit can't park the money, then you'll occasionally observe some odd spending patterns at the end of the fiscal year, purchasing items that would have seemed extravagant earlier.   Alternatively, if a budget surplus can be anticipated earlier in the fiscal year, then the money is "burning a whole in the manager's pocket."  This enables some creative uses of the funds that are sensible but wouldn't be entertained if not for the budget surplus.  Let's turn to the case of a negative balance.  In this case the budget needs to be brought to balance somehow, probably out of the budget of the unit manager's boss  or even one rung higher than that in organization.  Closer to the top, the unit may have a banking function and/or have some accounts that enable banking, while other accounts zero out at the end of the fiscal year.

If the overage is a small fraction of the overall budget, this is no big deal.  But what is small or not is likely not specified ahead of time so, like beauty, it is in the eye of the beholder.  The manager may be fearful that running a large negative balance will be treated as a black mark at performance review time.  In my experience, units typically come in with a small positive balance, on these grounds.  Where I've seen large negative balances, there was a structural issue with the budget.  The unit had many more obligations than it could meet with available funding.   This happens on occasion and is very uncomfortable, but not altogether surprising.

Let me make a little diversion here to illustrate.  On our campus at the time I'm referring to the campus had a huge unfunded deferred maintenance obligation, somewhere between $500 million  and $1 billion dollars.  Performing deferred maintenance is necessary, just as replacing old equipment is necessary.  But it is unglamorous so managers with budget authority would cheat on that and fund other things that would give them more credit.  Eventually the campus "solved" the problem by having a fee that students pay to cover deferred maintenance.  The funds raised with that fee can only be used on a deferred maintenance project.  DKH was one of the first buildings to get an upgrade under the new approach.  The air conditioning in the building is still not great (it is an old building) but it is much better than it was before they did the project.   Getting back to the concluding point in the previous paragraph, if the unit has a large fraction of its expenditure to replace equipment, the funder of that unit may not have allocated the appropriate amount for that purpose.  Instead, they will have allocated much less, or even nothing at all.  This is passing the buck rather than assuming the obligation.  It happens, more often than I care to explain further.

This brings up the next point, which is about sizing a unit's activities (and thus sizing its budget).  If it is right sized and the activity level is stable over time, then the off the top funding approach I described above should work reasonably well, though it is possible that inflation on the expenditure items in the non-salary piece can be an issue.  On the other hand that means falling prices on the expenditure items would produce a windfall for the unit.

What happens, however, if the unit's activity level is growing as there is more demand for the services that the unit provides?  In the off the top model there will be scarcity and rationing of some sort.  This gives one explanation why in certain departments students might not be able to get into the classes they want to register for.  There simply isn't enough capacity to handle all the demand.  If the unit were cost recovery, in contrast, then as the demand was increasing, revenues would be increasing as well, and the unit could afford to add capacity.  There may still be near term bottlenecks, but it would be much easier to match the growth in demand to the growth in capacity, so that long term there wouldn't be excess demand.  Indeed, the same argument suggest that cost recovery units can shrink when demand is falling off.  In contrast, units funded off the top will start to appear as if they have idle capacity or underutilized capacity.   Thus, in a dynamic environment where growth or shrinkage can't be forecasted perfectly, the cost recovery approach probably does a better job of matching capacity to demand.

That said,  I want to note that in my work I preferred being in an off the top funded unit.  To explain why, let's recall at the beginning of the semester we did the Akerlof Gift Exchange model.  Gift exchange is how I'd like my units to operate, and it is hard if not impossible to do with a cost recovery approach.  So we should note that the funding model does impact the nature of how work is done.  Under cost recovery, the unit is more or less like a profit maximizing entity in the business world.   That approach may have a place at the university, but the mainstay of what the university does shouldn't be driven by that model, in my opinion.  Profit maximizing is anti-collegial.

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I briefly want to touch here on the other role that transfer pricing plays in the world outside the university, which is to impact division profitability and thereby serve as a performance measure of how the division is doing.  Such performance measures are often linked to the compensation of the division's executive team.  So division leadership may be more interested in division profitability  than they are with overall organization profitability.  This means that organizations have to balance incentives at the division level with maximizing overall organization profit.  The Excel homework does consider this some.

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There is one other way that transfer pricing works for multinationals that is important in actuality, but we won't talk about it in our class.  This is to move profit around geographically, from a high tax area to a low tax area.  Transfer pricing re-sites the profit so the organization can retain a greater share of it.  In other words, even if the economic activity of a company happens in one location, transfer pricing can then be use to "ship" profit to a different location.  If this was done to make heavy investments in the destination location, that would be one thing.  But if the profits are merely held as retained earnings, then there would seem to be no productivity argument in support of the transfer pricing.  As such it looks like pure opportunism, from the point of view of the locality where the economic activity actually takes place and where tax revenues to fund public expenditures would be useful to the community overall.   This begins to make the issue sound political.  I don't want to bring politics into our class, as the last time I did that it blew up in my face.  So I will close here, simply noting that the practice does exist.