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Negative affect, absorption, and immunity

J D Shea1, R Burton, A Girgis

  • 1Psychology Department, University of Newcastle, NSW Australia.

Physiology & Behavior
|March 1, 1993
PubMed
Summary
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Psychological traits like absorption and neuroticism impact immune function. Individuals with extreme emotional expression or suppression showed reduced cell-mediated immunity.

Area of Science:

  • Psychoneuroimmunology
  • Psychology
  • Immunology

Background:

  • Psychological characteristics such as absorption and neuroticism are known to influence health outcomes.
  • Cell-mediated immunity plays a crucial role in the body's defense mechanisms.
  • Previous research suggests a link between psychological states and immune system functioning.

Purpose of the Study:

  • To investigate the relationship between absorption, neuroticism, and immune responses.
  • To examine how different patterns of emotional expression (repression vs. extreme expression) relate to cell-mediated immunity.
  • To determine the effects of neuroticism on both in vitro and in vivo measures of immunity.

Main Methods:

  • Thirty-nine female participants completed psychological questionnaires assessing absorption and neuroticism.

Related Experiment Videos

  • Blood samples were collected for in vitro analysis of T-cell numbers.
  • In vivo cell-mediated immunity was assessed using delayed hypersensitivity skin responses.

    • Main Results:

    • Subjects categorized as repressors (low absorption/low neuroticism) or extreme expressors (high absorption/high neuroticism) exhibited lower immune responses.
    • A significant main effect of neuroticism was observed across both in vitro and in vivo immune measures.
    • Higher levels of neuroticism correlated with enhanced immune responses.

    Conclusions:

    • Specific psychological profiles, particularly those involving extreme emotional regulation, are associated with diminished cell-mediated immunity.
    • Neuroticism appears to be a significant factor positively influencing immune system activity.
    • These findings highlight the intricate connection between psychological states and immune function, suggesting potential targets for immune-related health interventions.