Experimental investigations of the genesis of visual space perception.

The methodology and findings of 3 categories of experimental studies are reviewed and evaluated: (a) studies of organisms that have been deprived of visual stimulation until the time of testing, (b) studies of newborn organisms that are tested soon after birth, and (c) studies in which E controls the visual stimulation to which 0 is exposed from birth to the time of testing. The evidence provided by these experiments suggests that conclusions about the genetic basis of space perception will differ depending on the stimulus correlates under consideration.