Sunday, July 03, 2005

Psychology and Astrology

Here is an interesting study showing the beginnings of convergence of science and astrology (in my mind).

Season of Birth Variations in the Temperament and Character Inventory of Personality in a General Population by Jayanti Chotai, Thomas Forsgren, Lars-Göran Nilsson, Rolf Adolfsson

Division of Psychiatry, Department of Clinical Sciences, University of Umeå, and Department of Psychology, Stockholm University, Stockholm, Sweden

Neuropsychobiology 2001;44:19-26

Abstract

Background: Since several studies show season of birth variations in morbidity, suicidal behavior and CSF (cerebrospinal fluid) monoamine metabolites, we investigated season of birth variations in personality in the population.

Methods: We analyzed by multiple logistic regressions the Temperament and Character Inventory (TCI) for 2,130 individuals taking part in the Betula prospective random cohort study of Umeå, Sweden.

Results: The personality dimensions were correlated significantly with age and gender. We stratified the data according to age, gender and the season of TCI measurement. By the median split in each stratum, a high-value group and a low-value group were obtained for each of the personality dimensions. Those born during February to April were significantly more likely than those born during October to January to have high NS (novelty seeking) among women, particularly the subscale NS2 (impulsiveness vs. reflection), and to have high PS (persistence) among men. Temperament profiles also showed season of birth variations.

Conclusions: We discuss the associations in the literature between personality and the monoamines serotonin and dopamine, and suggest that our results are compatible with a hypothesis of season of birth variation in the monoamine turnover. The personality traits are likely to be influenced by several genetic and environmental factors, one of them being the season of birth.

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