title: Two-choice conditional discrimination performance of pigeons as a function of reward expectancy, prechoice delay, and domesticity.
mesh_terms: D000818:Animals; D010856:Columbidae; D003216:Conditioning, Operant; D003463:Cues; D004193:Discrimination Learning; D005824:Genetics, Behavioral; D012055:Reinforcement Schedule; D012201:Reward; D013997:Time Factors