Wonderful picture from 1950 relating to Dr. B.F Skinner's research into the theory that reward is more effective in getting people - or in this case pigeons - to perform tasks. The text accompanying the photo was as follows:
In still another of Professor Skinner's exhibits, which demonstrates competition, the birds play a modified game of ping-pong. Considerably smaller than regulation size, being about two feet square, and has no net. One pigeon, using his beak, tries to bat the ball past his opponent. Rallies sometimes go to three or four shots but most of the shots are "aces." The winner is rewarded with food after each shot.
This picture forms part of an initiative to create a repository of psychology images that can be freely used without restriction in psychology presentations, projects, lectures, dissertations, books etc.
If you would like to use any of the pictures, all I ask is that you include the following information.
Image(s) provided courtesy of www.all-about-psychology.com/