Document Detail

Key-peck probability and topography in a concurrent variable-interval variable-interval schedule with food and water reinforcers.
MedLine Citation:
PMID:  9037783     Owner:  NLM     Status:  MEDLINE    
The relation between variables that modulate the probability and the topography of key pecks was examined using a concurrent variable-interval variable-interval schedule with food and water reinforcers. Measures of response probability (response rates, time allocation) and topography (peck duration, gape amplitude) were obtained in 5 water- and food-deprived pigeons. Key color signaled reinforcer type. During baseline, response rates and time allocations were greater to the food key than to the water key, and food-key pecks had larger gapes and shorter durations. Relative probability measures (for the food key) were increased by prewatering and decreased by prefeeding. Deprivation effects upon topography measures were apparent only when food- and water-key pecks were analyzed separately. Food-key gape amplitudes increased with prewatering and decreased with prefeeding. The clearest effect occurred with prewatering. There were no consistent effects upon water-key gapes. The key color-reinforcer relation was reversed for 3 pigeons to determine how response topography was modulated during the transition from food- to water-key pecks. Reacquisition was faster for the probability than for the topography measures. Analysis of gape-amplitude distributions during reversal indicated that response-form modulation proceeded through the generation of intermediate gape sizes.
B O Ploog; H P Zeigler
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the experimental analysis of behavior     Volume:  67     ISSN:  0022-5002     ISO Abbreviation:  J Exp Anal Behav     Publication Date:  1997 Jan 
Date Detail:
Created Date:  1997-04-07     Completed Date:  1997-04-07     Revised Date:  2010-09-13    
Medline Journal Info:
Nlm Unique ID:  0203727     Medline TA:  J Exp Anal Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  109-29     Citation Subset:  IM    
Department of Psychology & Counselor Education, Central Missouri State University, Warrensburg 64093, USA.
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MeSH Terms
Appetitive Behavior*
Food Deprivation
Reinforcement Schedule*
Reversal Learning
Water Deprivation
Grant Support

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