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The learned reinterpretation of fluency in amnesia
Marie Geurten1, Sylvie Willems2
1Department of Psychology, Neuropsychology Unit, University of Liège, Belgium.
Neuropsychologia
|May 13, 2017
Summary
Amnesia patients show altered use of processing fluency in memory tasks. This suggests memory impairments may stem from how they attribute fluency cues, especially when alternative explanations exist.
Area of Science:
- Cognitive Neuroscience
- Neuropsychology
- Memory Research
Background:
- Processing fluency serves as a heuristic in memory judgments.
- The impact of amnesia on fluency-based decision-making remains largely unexplored.
Purpose of the Study:
- To investigate how amnesia affects the utilization of processing fluency in recognition memory.
- To examine the role of attribution processes and contingency learning in amnesia-related fluency deficits.
Main Methods:
- Experiment 1: Compared fluency-based recognition decisions in amnesic patients (n=8) and healthy controls (n=16).
- Experiment 2: Manipulated the contingency between processing fluency and prior stimulus exposure in healthy participants (n=42) to model attribution changes.
Main Results:
- Amnesic patients exhibited different patterns of fluency use compared to controls in recognition tasks.
- Healthy participants in a reversed contingency condition (fluency dissociated from prior exposure) showed attribution patterns similar to amnesic patients.
- This suggests amnesia may involve impaired attribution of fluency, particularly when perceptual quality offers an alternative explanation.
Conclusions:
- Amnesia impacts the reliance on and attribution of processing fluency in memory decisions.
- Deficits in attributing fluency may arise from altered contingency learning between processing ease and past experiences.
- Findings highlight the complex interplay between memory, fluency, and attribution in neurological conditions.
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