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Related Experiment Videos

Extinction of responding maintained by timeout from avoidance.

M Galizio1

  • 1Department of Psychology, University of North Carolina at Wilmington 28403, USA. galizio@uncwil.edu

Journal of the Experimental Analysis of Behavior
|February 24, 1999
PubMed
Summary
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Lever pressing maintained by negative reinforcement, specifically timeout from avoidance, shows remarkable resistance to extinction in rats. This persistent behavior challenges current theoretical explanations in behavioral psychology.

Area of Science:

  • Behavioral Neuroscience
  • Animal Behavior
  • Operant Conditioning

Background:

  • Lever pressing in rats can be maintained by negative reinforcement, such as timeout from avoidance schedules.
  • Understanding the extinction properties of such behaviors is crucial for behavioral theories.
  • Previous research suggests some behaviors are more resistant to extinction than others.

Purpose of the Study:

  • To examine the resistance to extinction of lever pressing maintained by timeout from avoidance.
  • To compare different extinction procedures and their effects on avoidance and timeout responding.
  • To investigate the persistence of timeout responding following the extinction of avoidance.

Main Methods:

  • Rats were trained on a concurrent schedule involving avoidance and timeout from avoidance.

Related Experiment Videos

  • Two extinction experiments were conducted: one omitting shocks, another making timeout lever responses ineffective.
  • Response rates on both levers were monitored during extinction phases over multiple sessions.

    • Main Results:

    • Omitting shocks alone showed little effect on timeout responding, while making timeout responses ineffective led to rapid extinction.
    • Avoidance responding declined relatively quickly (5-10 sessions) when shocks were omitted.
    • Timeout lever responding exhibited significant resistance to extinction, persisting for over 20 sessions in some rats even after avoidance extinction.

    Conclusions:

    • Lever pressing maintained by negative reinforcement (timeout from avoidance) is highly resistant to extinction.
    • The persistence of timeout responding after avoidance extinction is not adequately explained by current theories.
    • This study highlights the robustness of behaviors maintained by negative reinforcement.