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Related Experiment Video

Updated: Jun 9, 2026

Development of a Virtual Reality Assessment of Everyday Living Skills

Development of a Virtual Reality Assessment of Everyday Living Skills

Published on: April 23, 2014

The relationships between schizophrenia symptom dimensions and executive functioning components.

Laura K Clark¹, Debbie Warman, Paul H Lysaker

¹University of Indianapolis, School of Psychological Sciences, 1400 East Hanna Avenue, Indianapolis, IN 46227, USA. clarklk@uindy.edu

Schizophrenia Research

|August 31, 2010

Summary

This summary is machine-generated.

Schizophrenia symptoms are linked to distinct executive functioning components, not a single unified process. Negative and cognitive symptoms relate to inhibition/set shifting, while cognitive symptoms also involve mental flexibility.

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Area of Science:

Neuroscience
Psychiatry
Cognitive Psychology

Background:

Executive functioning impairments are inconsistently linked to schizophrenia symptoms.
Previous research often treated executive functioning as a unified construct, overlooking distinct components.

Purpose of the Study:

To identify separate components of executive functioning in individuals with schizophrenia using factor analysis.
To examine the relationships between these executive functioning components and schizophrenia symptom dimensions.

Main Methods:

Conducted an exploratory factor analysis on the Delis Kaplan Executive Function System (D-KEFS) performance data from individuals with schizophrenia.
Correlated derived executive functioning factor scores with Positive and Negative Symptom Scale (PANSS) scores.

Main Results:

Two distinct executive functioning components were identified: inhibition/set shifting and mental flexibility.
Negative and cognitive schizophrenia symptoms were associated with the inhibition/set shifting component.
Cognitive symptoms were uniquely associated with the mental flexibility component; positive symptoms showed no significant relationship.

Conclusions:

Executive functioning in schizophrenia is not monolithic but comprises separable components.
Specific executive functioning deficits are differentially related to positive, negative, and cognitive symptom dimensions in schizophrenia.