Temporal Context in Concurrent Chains: I. Terminal-Link Duration

Autor/in	Grace, Randolph C.
Titel	Temporal Context in Concurrent Chains: I. Terminal-Link Duration
Quelle	In: Journal of the Experimental Analysis of Behavior, 81 (2004) 3, S.215-237 (23 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-5002
Schlagwörter	Prediction; Experiments; Animals; Intervals; Models; Reinforcement; Correlation; Equations (Mathematics); Stimuli + Suchen Sie Ihr Suchwort? Vorhersage; Erprobung; Animal; Tier; Tiere; Analogiemodell; Positive Verstärkung; Korrelation; Equations; Mathematics; Gleichungslehre; Anreizsystem
Abstract	Two experiments are reported in which the ratio of the average times spent in the terminal and initial links ("Tt/Ti") in concurrent chains was varied. In Experiment 1, pigeons responded in a three-component procedure in which terminal-link variable-interval schedules were in constant ratio, but their average duration increased across components by a factor of two. The log initial-link response ratio was a negatively accelerated function of "Tt/Ti". Overall, the data were well described by Grace's (1994) contextual choice model (CCM) with temporal context represented as ("Tt/Ti")[superscript k] or 2"Tt"/("Tt" + "Ti"), and by Mazur's (2001) hyperbolic value-added model (HVA), with each model accounting for approximately 93% of the variance. In Experiment 2, fixed-parameter predictions for each model were generated, based on the data from Experiment 1, for conditions in which "Tt/Ti" was varied over a more extreme range. Data were consistent with the predictions of CCM with temporal context represented as 2"Tt"/("Tt" + "Ti") and to a lesser extent as ("Tt/Ti")[superscript k], but not with HVA. Overall, these results suggest that preference increases as a hyperbolic function of "Tt/Ti" when terminal-link duration is increased relative to initial-link duration, with the terminal-link schedule ratio held constant. (Contains 5 tables, 10 figures and 2 footnotes.) (As Provided).
Anmerkungen	Society for the Experimental Analysis of Behavior. Available from: Indiana University Department of Psychology. Bloomington, IN 47405. Tel: 812-334-0395; Fax: 812-855-4691; e-mail: jeab@indiana.edu; Web site: http://seab.envmed.rochester.edu/jeab/index.html
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10