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Titolo:
UNBLOCKING WITH QUALITATIVE CHANGE OF UNCONDITIONED STIMULUS
Autore:
BLAISDELL AP; DENNISTON JC; MILLER RR;
Indirizzi:
SUNY BINGHAMTON,DEPT PSYCHOL BINGHAMTON NY 13902 SUNY BINGHAMTON,DEPT PSYCHOL BINGHAMTON NY 13902
Titolo Testata:
Learning and motivation
fascicolo: 2, volume: 28, anno: 1997,
pagine: 268 - 279
SICI:
0023-9690(1997)28:2<268:UWQCOU>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLOCKING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
A.P. Blaisdell et al., "UNBLOCKING WITH QUALITATIVE CHANGE OF UNCONDITIONED STIMULUS", Learning and motivation, 28(2), 1997, pp. 268-279

Abstract

Conditioned barpress suppression was used to examine the effects of qualitative changes in the unconditioned stimulus (US) between Phases 1and 2 of a blocking paradigm. In Phase 1, rats received pairings of aconditioned stimulus (CS) with footshock. In Phase 2, experimental subjects received a single trial of the same CS or a different CS compounded with a second stimulus and followed either by a footshock or an ice water dunking. These two USs were equated in their potential to elicit conditioned suppression of barpressing. Less blocking of the second stimulus (i.e., unblocking) was observed in subjects that received aqualitative change in US between phases than in subjects for which the US was consistent between phases. This unblocking effect is discussed with respect to the differences between various models of conditioning and several prior successes and failures to demonstrate unblocking. (C) 1997 Academic Press.

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Documento generato il 08/07/20 alle ore 07:08:33