Studies of visual depth perception: An effect of early experience on chicks on a visual cliff.

Abstract
The effect of rearing chicks in 3 different physical environments was investigated. After the 1st 35 hr of neonatal life in these environments, each chick was tested singly on a visual cliff. Significant x 2s'' were found for direction of descent between shallow and deep reared (p<.025), and normal and deep reared (p<.001). It may be concluded from these observations that the "choice" behavior of a chick on the centerboard of a visual cliff is in part a function of the parameters of the prior-to-testing environment.