Do Monkeys Want Audio or Visual Stimuli? Interactive Computers for Choice with White-Faced Sakis in Zoos
Interactive systems were built to give monkeys a choice over when and where to trigger stimuli as a way to control their environment to improve their welfare indices. Typically, systems only support the triggering of one stimulus – either audio or visual. In this study, a system was developed for monkeys that allowed them to […]
Discrimination generalization by macaque monkeys to unidimensional and multidimensional stimul
The purpose of this investigation was to study the factors influencing the generalization of stimuli in macaque monkeys. Twelve animals were used. The stimuli to be discriminated differed in size, form, and color. Generalization was demonstrated for most of the test. The monkeys generalized in terms of avoidance to the negative stimulus to as great […]
Numerity of a socially housed hamadryas baboon (Papio hamadryas) and a socially housed squirrel monkey (Saimiri sciureus)
To extend a study conducted by E. M. Brannon and H. S. Terrace (1998, 2000), the authors trained 1 hamadryas baboon (Papio hamadryas) and 1 squirrel monkey (Saimiri sciureus) to respond to stimuli representing the numerosities 1–4 in ascending order. When tested with novel stimuli of the same numerosities, both subjects’ performance appeared to be […]