title: Acquired equivalence learning with antecedent and consequent unconditioned stimuli.
abstract: The conditions under which cues with similar training histories are treated by rats as being equivalent were examined. A significant event, food, either preceded, followed, or preceded and followed each of the Stimuli A and B; Stimulus C was not food-associated. Next, B was counterconditioned with footshock until it suppressed an appetitively motivated behavior. When A and C were tested for generalized suppression, A (treated like B) evoked more suppression than C (treated differently than B). However, this equivalence effect was strong only when A and B predicted food and were treated alike.
authors.affiliation: University of Winnipeg, Manitoba, Canada.
authors.forename: K W
authors.initials: KW
authors.lastname: Johns
authors.forename: D A
authors.initials: DA
authors.lastname: Williams
mesh_terms: D000818:Animals; D003214:Conditioning, Classical; D007858:Learning; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D012054:Reinforcement, Psychology; D013997:Time Factors