Stephens, David W Impulsiveness without discounting: the ecological rationality hypothesis. [electronic resource] - Proceedings. Biological sciences Dec 2004 - 2459-65 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0962-8452 Standard No.: 10.1098/rspb.2004.2871 doi Subjects--Topical Terms: AnimalsBiological EvolutionEcologyFeeding Behavior--physiologyImpulsive BehaviorModels, Biological