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Corresponding influences of top-down control on task switching and long-term memory
Franziska R Richter1, Nick Yeung
1a Department of Psychology , New York University , New York , NY , USA.
Quarterly Journal of Experimental Psychology (2006)
|October 23, 2014
Summary
Cognitive control during task switching enhances memory selectivity for relevant information. Stronger top-down control improves distinguishing task-relevant from irrelevant items in long-term memory encoding.
Area of Science:
- Cognitive psychology
- Neuroscience
- Memory research
Background:
- Task switching involves shifting between different cognitive tasks.
- Previous research indicates task switching can reduce memory selectivity.
- Cognitive control plays a crucial role in executive functions.
Purpose of the Study:
- To investigate how cognitive control affects performance and memory during task switching.
- To examine the impact of manipulating top-down control on memory selectivity.
- To support or refute interactive models of memory encoding.
Main Methods:
- Three experiments were conducted using picture-word stimuli.
- Participants performed object and word classification tasks, switching between them.
- Cognitive control was manipulated by varying preparation time, task choice, and reward incentives.
Main Results:
- Task switching consistently led to reduced memory selectivity for task-relevant items.
- Increased top-down control, through various manipulations, enhanced memory selectivity.
- More effective cognitive control correlated with better discrimination of relevant information in memory.
Conclusions:
- Cognitive control significantly influences long-term memory encoding during task switching.
- Findings support an interactive model where memory traces are shaped by controlled processing.
- Top-down control selectively influences which information is prioritized and encoded into long-term memory.
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