Document Detail

Disruption of temporal discrimination and the choose-short effect.
MedLine Citation:
PMID:  17557392     Owner:  NLM     Status:  MEDLINE    
The present experiment examined the effects of several disruptors on temporal discrimination. Pigeons responded under a 0-delay symbolic matching-to-sample procedure in which responses to one key color were reinforced following the presentation of four shorter sample durations, and responses to another key color were reinforced following the presentation of four longer sample durations. Steady-state performance was disrupted by presession feeding, intertrial-interval food, visual distraction, and extinction. All disruptors decreased temporal-discrimination accuracy. Analyses of the fitted cumulative normal functions indicated that decreases in accuracy were produced mainly by decreases in overall stimulus control rather than specific effects on timing. In addition, all disruptors selectively decreased accuracy on long-sample trials--a choose-short effect. This effect is interpreted in terms of decreased attention to the samples under disruption. Current theories of the choose-short effect do not appear to easily account for these results.
Ryan D Ward; Amy L Odum
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Learning & behavior     Volume:  35     ISSN:  1543-4494     ISO Abbreviation:  Learn Behav     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-06-08     Completed Date:  2007-07-26     Revised Date:  2011-01-24    
Medline Journal Info:
Nlm Unique ID:  101155056     Medline TA:  Learn Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  60-70     Citation Subset:  IM    
Department of Psychology, Utah State University, Logan, Utah 84322-2810, USA.
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MeSH Terms
Choice Behavior*
Discrimination Learning*
Mental Recall*
Time Factors
Time Perception*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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