title: Order effects after blocked preexposure to two compound flavors.
abstract: In the first three experiments two groups of rats received prolonged blocked preexposure to AX-BX or to BX-AX. Experiment 1 showed that conditioning of AX after preexposure resulted in less generalization to BX in the AX-BX group than in the BX-AX group. Experiments 2 and 3 constituted, respectively, retardation and summation tests of the inhibitory properties acquired by B after preexposure and conditioning of A. Excitatory conditioning of B was retarded in the AX-BX group (Experiment 2) and only in this group B was able to alleviate the aversion conditioned to a new stimulus (Experiment 3). These results are explained as a consequence of the formation, in the AX-BX group, of inhibitory associations directed from B to A. A fourth experiment provided evidence that the A↔X association was preserved until the end of the preexposure phase in this group, which is a requisite for the formation of these inhibitory associations.
authors.affiliation: Universidad de Málaga, Spain. espinet@uma.es
authors.forename: Alfredo
authors.initials: A
authors.lastname: Espinet
authors.forename: José M
authors.initials: JM
authors.lastname: Caramés
authors.forename: Victoria D
authors.initials: VD
authors.lastname: Chamizo
mesh_terms: D000818:Animals; D003213:Conditioning, Psychological; D003627:Data Interpretation, Statistical; D004193:Discrimination Learning; D004435:Eating; D005260:Female; D005793:Generalization, Psychological; D007266:Inhibition, Psychological; D018021:Lithium Chloride / Q000494:pharmacology; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D012055:Reinforcement Schedule; D013649:Taste / Q000502:physiology*; D014868:Water Deprivation / Q000502:physiology
chemical_list: D018021:Lithium Chloride