Learning Set Formation in Common Tree Shrews (Tupaia glis)

Abstract

Following the studies on slow lorises (Nycticebus coucang) and ring-tailed lemurs (Lemur catta), the visual discrimination learning set was tested on diurnal common tree shrews (Tupaia glis) under almost the same experimental conditions. Their performance was significantly lower than that of lorises and lemurs (p < 0.001). An error factor analysis was made in the three species’ performance. Performance showed a strong relationship with the degree of neocortical development.