Cognitive load at encoding hurts memory selectivity
1Institute of Psychology, University of Bern, Bern, Switzerland.
Quarterly Journal of Experimental Psychology (2006)
|October 10, 2022
Summary
Higher cognitive load, caused by task switching, shorter stimulus duration, and less preparation time, impairs memory selectivity. These effects diminish over time, impacting attention and memory control.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Memory
Background:
- Memory selectivity, the ability to recall task-relevant over irrelevant information, is crucial for goal-directed behavior.
- Understanding factors influencing memory selectivity is key to cognitive function and autonomy.
Purpose of the Study:
- To investigate how cognitive load affects memory selectivity.
- To examine the impact of task switching, stimulus duration, and preparation time on memory selectivity.
Main Methods:
- Five experiments with 351 participants used incidental learning with picture-word pairs.
- Two task switching paradigms (cued and alternating runs) were employed.
- Recognition tests assessed memory for targets and distractors immediately and after a delay.
Main Results:
- Task switches, shorter stimulus duration, and shorter preparation time decreased memory selectivity.
- Preparation time effects were dependent on the task switching paradigm.
- Memory selectivity effects diminished over longer retention intervals (1 day to 1 week).
Conclusions:
- Increased cognitive load, manipulated through task switching and presentation parameters, reduces selective attention and memory selectivity.
- Findings link theories of attention, cognitive control, and memory, highlighting the impact of load on selective memory.
- The study underscores the importance of advance cues in preparation for memory performance.
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