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Retrieval effort cues predict eyewitness accuracy.

Torun Lindholm1, Fredrik U Jönsson1, Marco Tullio Liuzza1

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Retrieval effort cues, like speech patterns, can predict eyewitness memory accuracy. These cues also explain why witnesses feel confident about their memories.

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Area of Science:

  • Cognitive Psychology
  • Forensic Psychology
  • Memory Research

Background:

  • Correct eyewitness memories are recalled faster than incorrect ones, indicating retrieval ease predicts accuracy.
  • Limited research exists on predictors of genuinely reported eyewitness memories.

Purpose of the Study:

  • To investigate if verbal and paraverbal cues to retrieval effort can predict eyewitness memory accuracy.
  • To examine the role of effort cues and subjective confidence in predicting memory accuracy.

Main Methods:

  • Two studies were conducted analyzing verbal and paraverbal cues from honestly reported eyewitness statements.
  • Statistical analyses were used to determine the predictive power of effort cues and confidence.

Main Results:

  • Objectively verifiable verbal and paraverbal cues to retrieval effort strongly correlate with eyewitness memory accuracy.
  • Several effort cues uniquely predict memory accuracy.
  • Subjective confidence is based on effort cues, which mediate the confidence-accuracy relationship.

Conclusions:

  • Verbal and paraverbal cues to retrieval effort are reliable indicators of eyewitness memory accuracy.
  • These cues offer a potential method for improving accuracy judgments in legal and other contexts.
  • Understanding the role of effort cues can enhance the evaluation of eyewitness testimony.