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Mirror effect in frequency discrimination

R L Greene1, A Thapar

  • 1Department of Psychology, Case Western Reserve University, Cleveland, Ohio 44106.

Journal of Experimental Psychology. Learning, Memory, and Cognition
|July 1, 1994
PubMed
Summary
This summary is machine-generated.

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The mirror effect in recognition extends to frequency discrimination, showing that items easy to identify as old when old are also easy to identify as new when new. This effect occurs with words versus nonwords and across different word frequencies.

Area of Science:

  • Cognitive Psychology
  • Human Memory Research

Background:

  • The mirror effect is a phenomenon in recognition memory where stimuli easy to classify as old when old are also easy to classify as new when new.
  • Previous research primarily focused on item recognition rather than frequency discrimination.

Purpose of the Study:

  • To investigate whether the mirror effect extends to frequency discrimination tasks.
  • To examine the conditions under which frequency discrimination exhibits a mirror effect.

Main Methods:

  • Experiments involved participants discriminating between above-zero situational frequencies of stimuli.
  • Stimuli included words and nonwords, as well as low- and high-linguistic-frequency words.
  • Analysis focused on performance patterns to identify the mirror effect.

Related Experiment Videos

Main Results:

  • Frequency discrimination demonstrated a mirror effect when comparing words to nonwords.
  • The mirror effect was also observed when comparing low-linguistic-frequency words to high-linguistic-frequency words.
  • Accurate knowledge of item memorability was not required for the mirror effect to occur.

Conclusions:

  • The mirror effect is a robust phenomenon that applies to frequency discrimination, not just item recognition.
  • Stimulus characteristics like word status and linguistic frequency influence the manifestation of the mirror effect in frequency discrimination.
  • The findings suggest that the mirror effect is driven by underlying discriminability rather than explicit knowledge of memorability.