Fixed-interval pause duration in chained fixed-ratio, fixed-interval schedules
Psychol. neurosci. (Impr.)
;
5(1): 91-96, Jan.-June 2012. graf, tab
Artículo
en Inglés
| LILACS
| ID: lil-654434
ABSTRACT
Ten rats were submitted to chained fixed-ratio (FR), fixed-interval (FI) schedules of reinforcement. A FR schedule at one lever produced a discriminative stimulus associated with a FI 60-s schedule of primary reinforcement (water) at the second response lever. In Experiment 1, the FI schedule was kept constant while the FR requirement was changed from one to seven responses under five different experimental conditions for five rats. Increases in the FR requirement resulted in increases in post-reinforcement pauses but also decreases in pauses in the FI schedule. Using another five rats, Experiment 2 tested the hypothesis that short pauses in the FI schedule result from the use of the chained schedules procedure. Baseline was a FI 80-s schedule. In the second condition, chained FR 1 FI 80-s schedules were programmed. The third condition was a return to baseline. In baselines 1 and 2, the FI pause was compatible with the literature but decreased considerably when a chained schedule was used. The present results support the hypothesis that the time between primary reinforcement presentations dominates the control of FI pauses over control by the onset of a discriminative stimulus.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Esquema de Refuerzo
/
Discriminación en Psicología
Límite:
Animales
Idioma:
Inglés
Revista:
Psychol. neurosci. (Impr.)
Asunto de la revista:
Neurología
/
Psicologia
Año:
2012
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Instituto Walden 4/BR
/
Instituto de Educação Superior de Brasília/BR
/
Universidade de Brasília/BR
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