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Related Experiment Videos

Associative changes in elements and compounds when the other is reinforced.

R A Rescorla1

  • 1Department of Psychology, University of Pennsylvania, Philadelphia 19104, USA. rescorla@cattell.psych.upenn.edu

Journal of Experimental Psychology. Animal Behavior Processes
|May 20, 1999
PubMed
Summary

Rats learned associations differently depending on whether stimuli were presented alone or in compounds. Results suggest an elemental model of conditioning better explains these associative changes than a configural model.

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Area of Science:

  • Behavioral Neuroscience
  • Learning and Memory

Background:

  • Pavlovian conditioning involves learning associations between stimuli.
  • Understanding how the brain processes stimulus compounds versus individual elements is crucial for learning theories.

Purpose of the Study:

  • To investigate the symmetry of associative changes in stimulus compounds and elements.
  • To compare the predictive validity of elemental and configural models of Pavlovian conditioning.

Main Methods:

  • Four experiments utilized a Pavlovian magazine-approach conditioning paradigm with rats.
  • Manipulations included subsequent reinforcement of elements within compounds and vice versa.
  • Both between-group and within-subject designs were employed.

Main Results:

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  • Reinforcing an element (A) enhanced responding to its compound (AX).
  • Reinforcing a compound (AX) did not enhance responding to its element (A).
  • Associative decrements were observed when an element was reinforced in the presence of a moderately conditioned stimulus.

Conclusions:

  • The observed associative changes are more consistent with an elemental model of conditioning.
  • Findings challenge predictions made by a recently proposed configural model of conditioning.