Simultaneous manipulation of emotion and working memory load distorts temporal distance memory

Area of Science:

• Cognitive Psychology
• Neuroscience
• Memory Research

Background:

• Emotion and working memory load individually affect perception of time.
• Limited research exists on their combined impact on temporal perception in event sequences.
• Everyday memories are influenced by multiple simultaneous factors.

Purpose of the Study:

• To investigate the simultaneous impact of emotion and working memory load on memory for temporal distance in event sequences.
• To understand how varying levels of arousal and cognitive load influence temporal estimations.
• To explore potential interactions between emotional valence and working memory demands.

Main Methods:

• Participants completed an N-back task with emotional images (negative-high arousal vs. positive-low arousal).
• Working memory load was manipulated using 1-back and 2-back tasks.
• Temporal distance ratings were collected for image pairs presented during the N-back task.

Main Results:

• Negative-high arousal images led to overestimated temporal distances compared to positive-low arousal images.
• Low working memory load resulted in overestimated temporal distances compared to high working memory load.
• Limited consistent interaction was observed between emotion and working memory load.

Conclusions:

• Negative emotions and low cognitive load distort memory for temporal distances in event sequences.
• Distinct underlying mechanisms may govern the influence of emotion and working memory load on temporal perception.
• Findings offer new insights into the malleability of temporal sequence memory.