Related Experiment Video
Updated: Apr 4, 2026
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Brain Imaging Investigation of the Memory-Enhancing Effect of Emotion
Published on: May 4, 2011
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Emotional valence boosts partial and specific source memory
Nikoletta Symeonidou1, Maria Lee2, Beatrice G Kuhlmann2
1Department of Psychology, School of Social Sciences, University of Mannheim, 68161, Mannheim, Germany. nsymeoni@mail.uni-mannheim.de.
Psychonomic Bulletin & Review
|April 2, 2026
Summary
Emotional memory enhances both general source categories and specific details. This study found positive sources improved specific memory more than negative sources, suggesting a positivity effect in memory recall.
Area of Science:
- Cognitive Psychology
- Neuroscience
Background:
- Source memory is crucial for contextual understanding.
- Emotional valence of sources influences memory recall, but the specifics are debated.
Purpose of the Study:
- To investigate whether emotional enhancement of source memory affects general categories or specific details.
- To differentiate between partial and specific source memory using multinomial modeling.
Main Methods:
- Participants (N=67) encoded neutral words with positive, negative, or neutral images (matched for arousal).
- A multinomial modeling approach was used to analyze memory performance.
- Testing involved identifying the specific source image or marking the word as new.
Main Results:
- Both partial (valence category) and specific (image) source memory were enhanced for emotional sources compared to neutral ones.
- Specific source memory was significantly higher for positive than negative sources (positivity effect).
Conclusions:
- Emotionality of sources enhances recollection of both general valence categories and specific details.
- A positivity effect exists in specific source memory, possibly due to stimulus properties.
- Findings clarify the mechanisms of emotion-enhanced source memory and suggest future research directions.
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