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Stimulus-based mirror effects in associative recognition revisited.

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The mirror effect in memory is not a universal rule. Highly controlled stimuli revealed that word frequency and concreteness impact memory differently than previously thought, challenging established memory models.

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Area of Science:

  • Cognitive Psychology
  • Psycholinguistics
  • Memory Research

Background:

  • The mirror effect, where increased hit rates correlate with decreased false alarm rates in recognition tests, is considered a fundamental memory regularity.
  • Previous research often used confounded stimulus sets, potentially leading to spurious findings regarding the mirror effect.
  • Recent advancements in linguistic databases allow for the creation of highly controlled stimulus sets to isolate memory variables.

Purpose of the Study:

  • To investigate the presence and nature of the mirror effect in associative recognition using controlled and confounded stimulus sets.
  • To examine the independent effects of word frequency and concreteness on associative recognition.
  • To re-evaluate the universality of the mirror effect in memory research.

Main Methods:

  • Utilized stimulus sets previously created by Neath et al. (in press), comprising both highly controlled and confounded word pairs.
  • Conducted experiments focusing on associative recognition tasks.
  • Manipulated variables such as word frequency and concreteness to assess their impact on hit rates and false alarm rates.

Main Results:

  • Confounded stimuli produced mirror effects for word frequency and concreteness, replicating prior findings.
  • Highly controlled stimuli showed no mirror effect for word frequency in associative recognition.
  • Concreteness affected hit rates but not false alarm rates in associative recognition with controlled stimuli.

Conclusions:

  • The mirror effect is not a robust regularity of memory when using highly controlled stimuli, suggesting previous findings were artifactual.
  • Word frequency primarily influences false alarm rates in item recognition and has no effect on associative recognition.
  • Concreteness impacts hit rates in both item and associative recognition, irrespective of stimulus control.