One of the ongoing themes in this course is the Hawthorne experiment.  While students in management courses are familiar with this, economics students may not be so fortunate.  Below are some web sites that include additional details:

 

At http://courses.bus.ualberta.ca/orga417-reshef/mayo.htm scroll down about 100 lines and look for the major heading on the Hawthorne experiment.

A good discussion is at http://www.accel-team.com/motivation/hawthorne_01.html .