Visual attention and its relation to knowledge states in chimpanzees, Pan troglodytes

Primates rely on visual attention to gather knowledge about their environment. The ability to recognize such knowledge-acquisition activity in another may demonstrate one aspect of Theory of Mind. Using a series of experiments in which chimpanzees were presented with a choice between an experimenter whose visual attention was available and another whose vision was occluded, […]

The effect of body orientation on judgments of human visual attention in western lowland gorillas (Gorilla gorilla gorilla)

The ability to appreciate the attentional states of others is an important element used in discerning the presence of Theory of Mind in an individual. Whether primates are able to recognize attention, and further, use such information to predict behavior, remains contentious. In this study, six western lowland gorillas (Gorilla gorilla gorilla) were tested under […]