title: Retroactive interference in discrimination learning.
abstract: In stage 1 of this experiment pigeons were trained to discriminate between two levels of noise or two colors by pecking on one of two disks. In stage 2 the discriminative stimuli were not presented, but pecking on the disks was rewarded on a random schedule. The second procedure caused the pigeons to forget the discrimination they had learned.
mesh_terms: D000161:Acoustic Stimulation; D000818:Animals; D010856:Columbidae; D004192:Discrimination, Psychological; D010775:Photic Stimulation; D013997:Time Factors