Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Prevention of the degraded-contingency effect by signalling training trials
Autore:
Gunther, LM; Miller, RR;
Indirizzi:
SUNY Binghamton, Dept Psychol, Binghamton, NY 13902 USA SUNY Binghamton Binghamton NY USA 13902 Psychol, Binghamton, NY 13902 USA Greensboro Coll, Greensboro, NC USA Greensboro Coll Greensboro NC USAGreensboro Coll, Greensboro, NC USA
Titolo Testata:
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY SECTION B-COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY
fascicolo: 2, volume: 53, anno: 2000,
pagine: 97 - 119
SICI:
0272-4995(200005)53:2<97:POTDEB>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
BIOLOGICAL SIGNIFICANCE; UNCONDITIONED STIMULI; COMPARATOR STIMULI; CUE COMPETITION; REINFORCEMENT; ASSOCIATIONS; RENEWAL; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Miller, RR SUNY Binghamton, Dept Psychol, Binghamton, NY 13902 USA SUNY Binghamton Binghamton NY USA 13902 nghamton, NY 13902 USA
Citazione:
L.M. Gunther e R.R. Miller, "Prevention of the degraded-contingency effect by signalling training trials", Q J EXP P-B, 53(2), 2000, pp. 97-119

Abstract

Presentation of unsignalled unconditioned stimuli (USs) interspersed amongPavlovian excitatory conditioning trials weal;ens conditioned responding to a target conditioned stimulus (CS; Rescorla, 1968). Hen-ever, signalling these intertrial USs with another cue (a cover stimulus) has been shown to alleviate this degraded-contingency effect (e.g. Durlach, 1982, 1983). In contrast to signalling the intertrial USs, the present experiments examined the effect on the degraded-contingency effect of signalling the target CS-US pairings. Experiment 1, using parameters selected to avoid overshadowing,found that consistently presenting a cover stimulus immediately prior to the target CS-US pairings during degraded-contingency training alleviated the degraded-contingency effect. Experiment 2 examined the underlying mechanism responsible for this cover-stimulus effect through posttraining associative inflation of the cover stimulus or the context, and found that inflation of the cover stimulus attenuated responding to the target CS (i.e. empirical retrospective revaluation). The results are discussed in terms of various acquisition- and expression-focused models of acquired responding.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 21:45:32