Andrzejewski, Matthew E Is extinction the hallmark of operant discrimination? Reinforcement and S(Delta) effects. [electronic resource] - Behavioural processes Jan 2007 - 49-63 p. digital Publication Type: Journal Article; Research Support, N.I.H., Extramural ISSN: 0376-6357 Standard No.: 10.1016/j.beproc.2006.09.010 doi Subjects--Topical Terms: AnimalsBehavior, Animal--physiologyConditioning, OperantDiscrimination LearningExtinction, PsychologicalMaleRatsRats, Long-EvansRats, Sprague-DawleyReinforcement, Psychology