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Related Experiment Videos

Trial order and retention interval in human predictive judgment.

Steven C Stout1, Jeffrey C Amundson, Ralph R Miller

  • 1Valdosta State University, Vakldosta, Georgia, USA.

Memory & Cognition
|April 18, 2006
PubMed
Summary
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Human predictive judgments are influenced by trial order and memory delays. Findings show recency effects persist even after long delays, indicating flexible use of information and non-catastrophic forgetting.

Area of Science:

  • Cognitive Psychology
  • Behavioral Neuroscience

Background:

  • Human predictive judgments are crucial for learning and decision-making.
  • The impact of trial order and retention intervals on these judgments is not fully understood.

Purpose of the Study:

  • To investigate how the order of reinforced and nonreinforced trials affects human predictive judgments.
  • To examine the influence of retention interval (immediate vs. 48-h delay) on these judgments.

Main Methods:

  • Participants were exposed to three trial orders: latent inhibition, partial reinforcement, and extinction.
  • Predictive judgments were assessed immediately after training and after a 48-hour delay.

Main Results:

  • A recency effect (reliance on recent events) was observed for immediate testing.

Related Experiment Videos

  • A primacy effect (reliance on initial events) was expected for delayed testing but did not occur.
  • The recency effect persisted even after a 48-hour retention interval.

    • Conclusions:

    • Human predictive judgments demonstrate non-catastrophic forgetting.
    • Trial order information is flexibly utilized, with recency effects showing resilience over time.