Effects of drive level on the degree of cue control by squirrel monkeys.
D000818:Animals; D003216:Conditioning, Operant; D003463:Cues; D004193:Discrimination Learning; D004328:Drive; D005260:Female; D005556:Form Perception; D000882:Haplorhini; D008297:Male; D012453:Saimiri; D012858:Size Perception; D014796:Visual Perception