Discrimination reversal learning in marmosets.

Abstract

After extensive training on multi-dimensional discrimination problems, two marmosets were tested on a series of 216 discrimination reversal problems. The results showed the marmoset capable of developing a discrimination reversal learning set, although with less rapidity and with a lower level of terminal accuracy than that of the rhesus monkey. "This finding may be taken as a further confirmation of the usefulness of interproblem learning as an index of phylogenetic status.".