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The specificity of learned parallelism in dual-memory retrieval
Tilo Strobach1, Torsten Schubert, Harold Pashler
1Humboldt University, Berlin, Germany, tilo.strobach@hu-berlin.de.
Memory & Cognition
|October 31, 2013
Summary
Dual-retrieval practice shifts response retrieval to parallel processing, but only for individuals who group their responses. This learned parallelism is cue-specific, not task-wide, suggesting a structural bottleneck in cognitive processing.
Area of Science:
- Cognitive Psychology
- Experimental Psychology
- Human Memory
Background:
- Dual-retrieval practice involves recalling two responses from a single cue.
- Initially, response retrieval is sequential.
- Learned retrieval parallelism emerges with practice, but only for those who synchronize response execution.
Purpose of the Study:
- Investigate the mechanism behind learned retrieval parallelism.
- Determine why parallelism occurs only in subjects who group responses.
- Differentiate between task-level and cue-level accounts of learned parallelism.
Main Methods:
- Two experiments were conducted to test competing theoretical accounts.
- Participants engaged in dual-retrieval practice with varying response execution strategies.
- Reaction times were measured to assess retrieval efficiency and parallelism.
Main Results:
- Results favored the cue-level account over the task-level account.
- Learned retrieval parallelism was found to be specific to practiced cues.
- Evidence supported a structural bottleneck model of cognitive processing.
Conclusions:
- Learned retrieval parallelism in dual-retrieval tasks is cue-specific.
- Synchronized response execution facilitates cue-specific chunking, leading to parallelism.
- A structural bottleneck limits the processing of practiced cues during retrieval.
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