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The recognition effects of attribute ambiguity.
1Department of Psychology, McGill University, 2001 Avenue McGill College, Montréal, QC, H3A 1G1, Canada. minyu.chang@mcgill.ca.
Psychonomic Bulletin & Review
|May 2, 2023
Summary
Attribute ambiguity, not just intensity, reliably impacts memory recognition. This suggests ambiguity is a distinct psychological dimension processed separately during learning, challenging prior assumptions.
Area of Science:
- Cognitive Psychology
- Psycholinguistics
- Neuroscience
Background:
- Semantic attributes like valence and concreteness influence memory.
- Attribute intensity (mean ratings) is traditionally manipulated, while ambiguity (SD ratings) is often dismissed as noise.
- Recent studies indicate attribute ambiguity also affects recall accuracy.
Purpose of the Study:
- To investigate the recognition effects of attribute ambiguity, intensity, and their interaction.
- To determine if attribute ambiguity is a distinct psychological dimension influencing memory encoding.
- To test theoretical hypotheses regarding attribute ambiguity's role in episodic memory.
Main Methods:
- Utilized mega-study data encompassing over 5,000 words.
- Analyzed recognition effects across 21 distinct semantic attributes.
- Examined both attribute ambiguity (standard deviation of ratings) and attribute intensity (mean ratings).
Main Results:
- Attribute ambiguity demonstrated significant recognition effects independent of attribute intensity.
- In some cases, attribute ambiguity explained more unique variance in recognition than attribute intensity.
- Evidence supports attribute ambiguity as a separate psychological dimension.
Conclusions:
- Attribute ambiguity is a crucial factor in memory recognition, not merely measurement error.
- This dimension is processed distinctly from attribute intensity during the encoding phase.
- Findings have implications for understanding how semantic attributes shape episodic memory.
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