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Updated: May 31, 2026

Irrelevant Stimuli and Action Control: Analyzing the Influence of Ignored Stimuli via the Distractor-Response Binding Paradigm
Published on: May 14, 2014
Delighted and distracted: positive affect increases priming for irrelevant information.
1Department of Psychology, University of Toronto, Toronto, Ontario, Canada. renee.biss@utoronto.ca
Positive moods enhance memory for irrelevant information. This study found that individuals in a positive mood showed better implicit memory for distracting words compared to those in a neutral mood, broadening attention.
Area of Science:
- Cognitive Psychology
- Affective Science
- Memory Research
Background:
- Emotional states significantly influence information processing, particularly for relevant stimuli.
- The impact of mood on the processing and memory of irrelevant information remains less understood.
- Understanding mood effects on attention and memory is crucial for cognitive theories.
Purpose of the Study:
- To investigate how induced positive mood affects the encoding and implicit memory of irrelevant information.
- To examine the breadth of attentional focus under different emotional states.
- To determine if positive mood enhances memory for unattended stimuli.
Main Methods:
- Participants were randomly assigned to either a neutral or positive mood induction condition.
- A task involved viewing overlapping pictures and words, with instructions to focus on pictures and ignore words.
- Implicit memory for the ignored words was assessed using a word fragment completion task after a delay.
Main Results:
- Individuals in the positive mood group demonstrated significantly higher implicit memory performance for the previously irrelevant words.
- Compared to the neutral mood group, the positive mood group showed enhanced recall of distracting information.
- This suggests a broader scope of information encoding when in a positive emotional state.
Conclusions:
- Positive mood broadens attentional scope, leading to the incidental encoding of irrelevant environmental information.
- Enhanced memory for irrelevant information under positive mood conditions can influence subsequent cognitive performance.
- These findings support theories linking positive affect to wider attentional processing and memory consolidation.
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