On a slightly different note. As a teacher of psychology, I have found
Epling and Pierce's theory a very provocative one, and one that I teach
regularly in intro psychology classes. It has a number of strengths.

1) It is based on experiments that are very simple to describe: Two groups
of rats individually housed in large exercise wheels. Both groups restricted
to feeding for 1 hour a day. One group has the wheel locked, the other has
the wheel free. Results: Locked wheel group adjusts to the feeding schedule
and lives happily ever after. The free wheel group begins to run thousands
of revolutions per day, loses weight, and if the experiment is not stopped,
the animals die of exercise-induced starvation. Students quickly understand
the experiment but are surprisedby the results--as were the original
researchers.

2) Anorexia is not uncommon among American college students, and my classes
are always interested in the topic.

3) E & P's theory works well as an example of phylogenic sources of
behavior. They suggest that evolution favored species who became more active
when food sources were scarce. Running to richer patches was a more
effective form of foraging.

Unfortunately, Frank Epling died a few years ago. I don't know whether Dave
Pierce has done much more on this topic since.

Stuart Vyse
Connecticut College
[EMAIL PROTECTED]


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