Performance of infant rhesus monkeys on discrimination learning, delayed response, and discrimination learning set.

Groups ranging in age from 60 to 360 days were compared. The ability to learn the 1st object discrimination presented to them increased with age to an asymptote at approximately 150 days, while learning set acquisition was below the adult level in all groups, and was practically nonexistent in the youngest groups. Performance on delayed […]

Learning capacities of the infant rhesus monkey

Delayed response, patterned string tests and discrimination learning problems administered at intervals during the rhesus monkey’s first year of life show the feasibility of estimating the learning capacity of infant monkeys. Individual discrimination problems were learned at 150 days of age and ability to form learning sets was demonstrated. Delayed responses up to 40 sec. […]