Chronic fatigue syndrome and personality: a case-control study using the Alternative Five Factor Model

Area of Science:

• Psychology
• Personality Disorders
• Medical Psychology

Background:

• Neuroticism is strongly linked to chronic fatigue syndrome (CFS).
• Previous studies show inconsistent findings regarding extraversion in CFS patients, potentially due to a lack of facet-specific analysis.
• The Alternative Five-Factor Model (AFFM) distinguishes between Activity and Sociability within extraversion.

Purpose of the Study:

• To determine the personality profile of adults with CFS using the AFFM.
• To evaluate the Zuckerman-Kuhlman Personality Questionnaire's ability to differentiate CFS patients from controls.
• To clarify the relationship between specific extraversion facets and CFS.

Main Methods:

• A comparative study involving 132 adult CFS patients and 132 matched healthy controls.
• Utilized the Zuckerman-Kuhlman Personality Questionnaire, based on the AFFM.
• Analyzed personality dimensions including Neuroticism-Anxiety, Activity, and Sociability.

Main Results:

• CFS patients displayed significantly higher Neuroticism-Anxiety levels compared to controls.
• CFS patients showed significantly lower Activity levels than controls.
• Activity and Neuroticism-Anxiety were the most effective discriminators between CFS patients and controls.

Conclusions:

• The findings support the association between higher Neuroticism-Anxiety and CFS.
• This study elucidates the role of extraversion in CFS by highlighting the significance of the Activity facet.
• Personality assessment, particularly focusing on Neuroticism and Activity, can aid in differentiating CFS patients.