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Related Concept Videos

Working Memory01:24

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Related Experiment Video

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A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
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Binding and strategic selection in working memory: a lifespan dissociation.

Myriam C Sander1, Markus Werkle-Bergner, Ulman Lindenberger

  • 1Center for Lifespan Psychology, Max Planck Institute for Human Development, Lentzeallee 94, 14195 Berlin, Germany. werkle@mpib-berlin.mpg.de

Psychology and Aging
|April 6, 2011
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Summary

Working memory capacity increases through childhood and declines in old age. This study found children and older adults had lower working memory performance than younger adults, with strategic selection developing slowly in children.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Lifespan Development

Background:

  • Working memory (WM) capacity follows a developmental trajectory, increasing in childhood and declining in older adulthood.
  • Understanding these lifespan changes is crucial for cognitive neuroscience and psychology.

Purpose of the Study:

  • To investigate lifespan differences in working memory (WM) performance.
  • To examine the influence of encoding duration and distracters on WM across age groups.

Main Methods:

  • A color change detection task was administered to children (10-12 years), younger adults (20-25 years), and older adults (70-75 years).
  • Varying load levels and encoding durations were used, with and without distracters, to assess WM performance.

Main Results:

  • Working memory performance was lower in older adults and children compared to younger adults.
  • Longer presentation times improved performance across all age groups, indicating enhanced strategic selection.
  • Children outperformed older adults with short encoding times; distracter effects were more pronounced in children and older adults.

Conclusions:

  • Strategic selection in WM develops gradually during childhood, lagging behind basic binding operations.
  • Both strategic selection and basic binding mechanisms decline in old age due to neural senescence.
  • Findings suggest distinct developmental timelines for frontal and medio-temporal brain network maturation and decline.