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Working memory gating mechanisms explain developmental change in rule-guided behavior.

Kerstin Unger1, Laura Ackerman1, Christopher H Chatham1

  • 1Department of Cognitive, Linguistic, & Psychological Sciences, Brown University, United States.

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Summary
This summary is machine-generated.

Adolescent development of rule-guided behavior hinges on improved output gating in working memory, not input gating or maintenance. This enhances cognitive control efficiency during decision-making transitions.

Keywords:
Cognitive controlComputational modelDevelopmentInput and output gatingWorking memory

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Area of Science:

  • Cognitive psychology
  • Developmental neuroscience
  • Human behavior

Background:

  • Cognitive control involves updating (input gating), maintaining, and selecting (output gating) information in working memory.
  • Rule-guided behavior development from childhood to adolescence may be linked to working memory gating changes.
  • Understanding these dynamics is crucial for cognitive training in typical and atypical development.

Purpose of the Study:

  • To investigate the developmental trajectory of working memory gating during rule-guided behavior.
  • To determine if changes in input gating or output gating explain developmental improvements in rule-guided behavior.
  • To assess developmental changes in the strategic efficiency of proactive versus reactive control.

Main Methods:

  • Utilized hierarchical rule tasks with varying complexity (1st, 2nd, 3rd order rules).
  • Experiment 1: Assessed rule-guided behavior linked to hierarchical complexity versus maintenance demands.
  • Experiment 2: Differentiated developmental changes in input versus output gating efficacy and strategic efficiency.

Main Results:

  • Rule-guided behavior development correlated with hierarchical complexity, not maintenance demands.
  • Adolescents showed increased efficacy in output gating compared to children.
  • Adolescents employed output gating more strategically and less frequently than children, indicating greater efficiency.

Conclusions:

  • Developmental improvements in rule-guided behavior are primarily driven by enhanced output gating efficacy.
  • Adolescents exhibit more strategic and efficient use of cognitive control mechanisms, particularly output gating.
  • Findings inform interventions aimed at improving cognitive control and working memory across development.