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Related Experiment Videos

The conditioning connection.

I P McLaren1, A Dickinson

  • 1Department of Experimental Psychology, University of Cambridge, U.K.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|August 29, 1990
PubMed
Summary
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Konorski's theory explains selective conditioning but not surprising reinforcement changes. An associability process is proposed to explain how past signal history modulates learning.

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Learning Theory

Background:

  • Jerzy Konorski proposed a theory of conditioning in 1948, suggesting learning strengthens connections between signal and reinforcer elements.
  • This theory aligns with error-correcting learning rules and explains selective conditioning phenomena like Kamin's blocking procedure.
  • However, it fails to account for unblocking effects caused by surprising reinforcement changes.

Purpose of the Study:

  • To explain the phenomenon of unblocking in associative learning.
  • To propose a mechanism that accounts for the influence of surprising reinforcement changes on conditioning.
  • To extend existing learning theories by incorporating signal history.

Main Methods:

  • Theoretical analysis of existing conditioning models (Konorski, Hebbian).

Related Experiment Videos

  • Examination of experimental findings, particularly Kamin's blocking procedure and its exceptions.
  • Postulation of an 'associability process' to explain observed anomalies.

    • Main Results:

    • The Konorskian error-correcting process explains selective conditioning but not unblocking.
    • Unblocking, particularly when triggered by surprising reinforcement, suggests a role for signal history.
    • An associability process, modulating connection weights based on past predictive history, is proposed.

    Conclusions:

    • Existing error-correcting models, including Konorski's, are insufficient to explain all aspects of associative learning.
    • The reinforcer-specificity of unblocking points to an 'associability process' that integrates past signal information.
    • This process modulates the strength of learned associations, offering a more comprehensive model of conditioning.