The young albino rabbit is a good S with which to demonstrate the principles of visual depth perception. It is small enough for a portable apparatus and behaviorally consistent enough for a reliable class demonstration. The results of a demonstration using a portable visual cliff apparatus to four laboratory sections with 10-wk.-old albino rabbits as Ss are presented. On the whole, one animal was used for each section. After a series of observations planned by E, students were allowed to request additional trials of depth-related behavior using conditions they chose themselves. The behavior of the rabbits during E-controlled and student-controlled trials is described.
