Personality and the immune system: models, methods, and mechanisms

Area of Science:

• Psychoneuroimmunology
• Health Psychology

Background:

• A link between personality and immune function has been proposed for over two decades.
• Understanding this connection is crucial for comprehending how personality influences chronic diseases such as cancer and heart disease.

Purpose of the Study:

• To review the existing literature on personality dimensions and their relationship with immune parameters.
• To identify theoretical and methodological challenges in current research.
• To highlight future research directions for investigating the influence of personality on the immune system.

Main Methods:

• Review of extant literature examining personality dimensions (e.g., repression, optimism, hostility, attributional style, extraversion-introversion) and their association with immune parameters.
• Discussion of theoretical and methodological issues, including selection of personality dimensions, study design, and psychosocial mediators.

Main Results:

• Several personality dimensions have been linked to immune parameters.
• Key challenges include selecting appropriate personality dimensions, study design, and accounting for psychosocial mediators.

Conclusions:

• Investigating the personality-immune system relationship requires sophisticated theoretical and methodological approaches.
• Future research in this area promises to enhance our understanding of both personality's influence on physiological systems and the mechanisms of disease onset and progression.