A 4-display contingent identity discrimination design was combined with a 4-display contingent position discrimination design to produce a merged task whose 8 displays appeared repeatedly over a sequence of trials. Human Ss solved the contingent identity portion of the task first in nearly all cases and maintained a high level of accuracy on the solved portion while coping with the remainder. Experimental variations related to the visual distinctiveness of the two portions proved unimportant.
HarlowH. F.Responses by rhesus monkeys to stimuli having multiple-sign values. In McNemarQ.MerrillM. A. (Eds.), Studies in personality. New York: McGraw-Hill, 1942. Pp. 105–123.
3.
LashleyK. S.Conditional reactions in the rat. J. Psychol., 1938, 6, 311–324.
