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Pattern Memory and Resistance to Extinction in Double Alternating Reinforcement.

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The Journal of General Psychology
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This study explored how the time between learning and forgetting (acquisition-extinction interval) affects resistance to extinction in partial reinforcement schedules. Double alternation schedules showed better memory retention with longer intervals compared to random alternation.

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Area of Science:

  • Behavioral psychology
  • Animal learning

Background:

  • Partial reinforcement schedules influence learning and memory.
  • The interval between acquisition and extinction (A-E interval) is a critical factor in memory retention.
  • Pattern memory has been proposed to explain certain learning phenomena.

Purpose of the Study:

  • To investigate the effect of regularly alternated partial reinforcement on resistance to extinction.
  • To assess the role of pattern memory in learning and extinction.
  • To examine how varying the A-E interval impacts extinction resistance in different reinforcement schedules.

Main Methods:

  • Two groups, random alternation (RA) and double alternation (DA), were trained extensively.
  • Groups were then subjected to extinction with either a short (1-day) or long (23-day) A-E interval.
  • Resistance to extinction was measured by performance during the extinction phase.

Main Results:

  • Random alternation (RA1) showed greater resistance to extinction than double alternation (DA1) with a short A-E interval.
  • With a long A-E interval (RA23, DA23), no significant difference in extinction resistance was observed between RA and DA groups.
  • Double alternation (DA) performance was retained better over the extended A-E interval compared to RA.

Conclusions:

  • Extinction results were not consistently explained by simple variables like N-length.
  • The persistence of the DA schedule under delayed extinction supports the concept of pattern memory.
  • Pattern memory may play a significant role in maintaining performance in complex reinforcement schedules over extended intervals.