Emotion enhances relative but not absolute temporal memory: A meta-analysis.

Area of Science:

• Cognitive Psychology
• Neuroscience

Background:

• The impact of emotion on memory for the timing of events is not fully understood.
• Previous studies have yielded conflicting results regarding emotion's influence on temporal memory.

Purpose of the Study:

• To systematically evaluate how emotion affects different types of temporal memory: temporal order, temporal source, and temporal distance.
• To reconcile discrepancies in prior research by conducting a comprehensive meta-analysis.

Main Methods:

• A three-level meta-analysis was performed on 33 studies, encompassing 44 experiments and 79 effect sizes.
• The analysis specifically examined emotion's influence on relative temporal memory (order and source) and absolute temporal judgments (distance).

Main Results:

• Emotion significantly enhanced temporal order memory (Hedges's g = 0.35) and temporal source memory (g = 0.28).
• No significant effects of emotion were found on temporal distance memory (g = 0.06).
• Dynamic stimuli and pure lists of emotional items improved temporal order memory more than static materials and mixed lists, respectively.

Conclusions:

• Emotion's effect on temporal memory is selective, not universal.
• Methodological factors and stimulus characteristics critically influence the magnitude and direction of emotion's impact on memory for 'when'.