The effects of linear perspective on relative size discrimination in chimpanzees (Pan troglodytes) and humans (Homo sapiens).
In this study, we tested the corridor illusion in three chimpanzees and five humans, applying a relative size discrimination task to assess pictorial depth perception using linear perspective. The subjects were required to choose the physically larger cylinder of two on a background containing drawn linear perspective cues. We manipulated both background and cylinder size in each trial. Our findings suggest that chimpanzees, like humans, exhibit the corridor illusion.
Imura
Tomoko
T
Department of Psychology, Kwansei Gakuin University, 1-1-155 Uegahara, Nishinomiya, Hyogo 662-8501, Japan. imura@pri.kyoto-u.ac.jp
Tomonaga
Masaki
M
Yagi
Akihiro
A
D000328:Adult; D000818:Animals; D015350:Contrast Sensitivity; D003867:Depth Perception; D004192:Discrimination, Psychological; D004215:Distance Perception; D005260:Female; D006801:Humans; D008297:Male; D009903:Optical Illusions; D010775:Photic Stimulation; D012016:Reference Values; D012858:Size Perception; D013028:Space Perception; D013045:Species Specificity