Deriving a supply curve (experiment, demonstration) Instructor asks students the minimum price they would accept in order to shave their head. Alternatively, instructor could name prices and ask class how many students would be willing to shave their head at each price. Either way, results are tabulated into a supply curve. For larger classes, can be done with a sub-set of students as a demonstration for the rest of the class, or results can be collected with clickers. ... View more

Originally posted on December 4, 2009.   In The Price System we show how even a product as simple as a rose requires the international coordination of flower growers, truck drivers, airlines, Dutch auctioneers and many thousands of others.  In our chapter on Price Ceilings we show what happens when a price ceiling prevents the necessary coordination from occurring.  You can find lots of interesting stories in the chapter of shortages, shrinking quality, misallocation and production chaos. The second half of the except, The Specter of Stagflation, from The Commanding Heights has a short introduction to the politics and economics of wage and price controls under Nixon.  Students may be amused that it features Ben Stein talking about his father Herb Stein and also has many figures from later administrations such as Dick Cheney and George Schultz.   The video makes several important points.  First, wage and price controls were initially popular with the public.  Second, the law created shortages and ultimately did not solve the problem of inflation.  Most interesting, there is a rather horrifying section showing farmers drowning baby chicks.  In fact, farmers gassed, drowned, or suffocated a million baby chicks at this time.   The video, however, is not clear on exactly why the farmers behaved in this way and this is a good opportunity to see if your class can figure out the answer.  The answer is that the price of chickens was controlled but the price of grain used to feed chicks was not.  A rising feed price and a fixed chicken price meant that feeding chicks to sell chickens was no longer profitable.  Thus, farmers drowned their chicks and shortages of chicken become common.   An article from 1973 in Time magazine notes the same process worked in other areas, “Other farmers sent pregnant sows to the slaughterhouse and dispatched old milk cows to hamburger heaven.” The article from Time also illustrates how one intervention in the price system often snowballs into further interventions.  In this case, “To buck up the supply and bring down the price of feed, the Administration clamped a temporary embargo on exports of soybeans and cottonseed.” ... View more