title: Ability of rhesus monkeys to discriminate complex spatial arrangements of visual stimuli.
mesh_terms: D000818:Animals; D003118:Color Perception; D003210:Concept Formation; D004193:Discrimination Learning; D005260:Female; D000882:Haplorhini; D006815:Hunger; D008297:Male; D012054:Reinforcement, Psychology; D013028:Space Perception; D013894:Thirst