Determinants of choice.
D000818:Animals; D001070:Appetitive Behavior; D001522:Behavior, Animal; D001527:Behaviorism; D002335:Carnivora; D002645:Chickens; D002755:Choice Behavior; D002940:Circadian Rhythm; D003216:Conditioning, Operant; D004032:Diet; D004463:Ecology; D004467:Economics; D004777:Environment; D005247:Feeding Behavior; D005508:Food Deprivation; D051381:Rats; D012055:Reinforcement Schedule; D013997:Time Factors