Discrimination learning with vertical vs. horizontal stimulus relationships.

Abstract

One group of four rhesus monkeys was trained on an object-quality discrimination problem with the discriminanda in a vertical relationship while a control group of three monkeys learned in the customary horizontal plane. It was found that the plane of stimulus presentation did not significantly affect learning or transfer of the learning set after a 90[degree] rotation. The results of this study strengthen the conclusions of a previous report on spatial contiguity of cue and reward. Implications of these findings for the matching-from-sample task are discussed.