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TPQ in euthymic manic-depressive patients

Y Osher¹, C R Cloninger, R H Belmaker

¹Ministry of Health Mental Health Center, Ben Gurion University of the Negev, Beersheva, Israel.

Journal of Psychiatric Research

|September 1, 1996

Summary

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Personality traits in individuals with bipolar disorder may indicate a genetic predisposition. Euthymic bipolar patients showed distinct patterns on the Tridimensional Personality Questionnaire (TPQ), suggesting these traits could be genetic markers for the illness.

Area of Science:

Psychiatry
Behavioral Genetics
Clinical Psychology

Background:

Previous research indicated personality similarities between remitted bipolar patients and controls.
The Tridimensional Personality Questionnaire (TPQ) possesses heritable subscales and is linked to neurochemistry.
Specific personality traits are hypothesized as potential genetic markers for manic-depressive illness.

Purpose of the Study:

To investigate the personality profiles of euthymic bipolar patients using the Tridimensional Personality Questionnaire (TPQ).
To identify specific personality traits that may serve as genetic markers for manic-depressive illness.

Main Methods:

Utilized the Tridimensional Personality Questionnaire (TPQ) to assess personality.
Administered the TPQ to 50 euthymic bipolar patients recruited from an outpatient Lithium Clinic.

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Compared patient scores against U.S. population norms.

Main Results:

Euthymic bipolar patients exhibited significantly reduced Persistence.
Euthymic bipolar patients showed significantly increased Harm Avoidance.
Euthymic bipolar patients displayed significantly increased Reward Dependence compared to U.S. norms.

Conclusions:

The identified personality traits (low Persistence, high Harm Avoidance, high Reward Dependence) may be associated with the genetic diathesis of bipolar disorder.
These findings contribute to understanding the genetic underpinnings of manic-depressive illness.
Personality assessment via TPQ may offer insights into the genetic susceptibility for bipolar disorder.