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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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Published on: May 7, 2014

Executive function in older adults: a structural equation modeling approach.

Rachel Hull¹, Randi C Martin, Margaret E Beier

¹Department of Psychology, Texas A&M University, College Station, TX 77843-4235, USA. rhull@tamu.edu

Neuropsychology

|July 2, 2008

Summary

This summary is machine-generated.

Executive functions in older adults are organized around shifting and updating skills, not inhibition. Updating best predicted complex task performance, offering insights into cognitive aging.

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Area of Science:

Cognitive psychology
Neuroscience
Gerontology

Background:

Executive functions are crucial for complex cognitive tasks.
Understanding the structure of executive functions in older adults is vital for cognitive aging research.

Purpose of the Study:

To examine the underlying factor structure of executive functions in older adults.
To identify which executive function skills predict performance on complex tasks.
To compare executive function patterns in older adults with those of young adults.

Main Methods:

Confirmatory factor analysis (CFA) and structural equation modeling (SEM) were employed.
100 older adults completed 10 tasks assessing mental set shifting, information updating, and inhibition.
Performance on the Tower of Hanoi and Wisconsin Card Sort tasks was analyzed.

Main Results:

CFA revealed robust Shifting and Updating factors but not an Inhibition factor.
No distinct verbal or nonverbal factors for executive functions were identified.
Updating emerged as the strongest predictor of performance on complex executive tasks.

Conclusions:

Executive functions in older adults appear to be organized around Shifting and Updating, with Inhibition being less distinct.
The findings provide valuable insights into theories of cognitive aging and executive function organization.