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Related Experiment Videos

Depressive type and state effects on personality measures.

P Boyce1, D Hadzi-Pavlovic, G Parker

  • 1Mood Disorders Unit, Prince Henry Hospital, Australia.

Acta Psychiatrica Scandinavica
|February 1, 1990
PubMed
Summary

Mood state significantly impacts personality questionnaire scores in depressives. Changes in mood, rather than diagnosis, were the primary driver of score elevations in this study.

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Psychometrics

Background:

  • Personality questionnaires are used to assess traits.
  • Depression can influence self-reported personality characteristics.
  • The relationship between mood state, diagnosis, and personality scores requires clarification.

Purpose of the Study:

  • To investigate whether diagnosis or mood state severity is the primary influence on personality questionnaire scores in depressed individuals.
  • To determine the impact of mood changes on personality assessments over time.

Main Methods:

  • Longitudinal study design.
  • Involved 16 endogenous and 83 neurotic depressives.
  • Administered personality questionnaires at baseline and 20-week follow-up.

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Main Results:

  • Significant changes in personality questionnaire scores were observed over 20 weeks.
  • Endogenous depressives showed greater changes in dependence and timidity.
  • After controlling for mood state changes, only one dependence measure and timidity remained significant.

Conclusions:

  • Mood state change is the major factor influencing personality questionnaire scores in depression.
  • The hypothesis that diagnosis is the primary driver received only partial support.
  • Mood fluctuations significantly affect self-perception and reporting on personality measures.