A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Testosterone and temperament traits in men – Longitudinal analysis
Alaotsikko: Longitudinal analysis
Tekijät: Maattanen I, Jokela M, Hintsa T, Firtser S, Kahonen M, Jula A, Raitakari OT, Keltikangas-Jarvinen L
Kustantaja: PERGAMON-ELSEVIER SCIENCE LTD
Julkaisuvuosi: 2013
Lehti:: Psychoneuroendocrinology
Tietokannassa oleva lehden nimi: PSYCHONEUROENDOCRINOLOGY
Lehden akronyymi: PSYCHONEUROENDOCRINO
Numero sarjassa: 10
Vuosikerta: 38
Numero: 10
Aloitussivu: 2243
Lopetussivu: 2248
Sivujen määrä: 6
ISSN: 0306-4530
DOI: https://doi.org/10.1016/j.psyneuen.2013.04.009
Tiivistelmä
Testosterone is the main male hormone that has been associated with various behavioral traits in humans and other animals. We investigated whether levels of total testosterone, free testosterone, and sex hormone binding globulin were associated with temperament traits in a population-based sample of Finnish men at two measurement times taken 6 years apart (n = 686 in year 2001, n = 727 in year 2007). Temperament was assessed using the Temperament and Character Inventory that consists of four temperament traits: novelty seeking, harm avoidance, reward dependence, and persistence. Higher levels of total and free testosterone were associated with higher novelty seeking (standardized B = 0.103, p < 0.001). This association was also observed in a longitudinal within-person analysis (B = 0.084, p = 0.008), suggesting that the association is not confounded by stable between-individual differences in other characteristics. Within-individual variation in total testosterone was associated with higher reward dependence, and higher levels of free testosterone were marginally associated with higher reward dependence. Reward dependence reflects the importance of social rewards to an individual. These results provide additional evidence for the stable and time-varying associations between testosterone and temperament in humans. (C) 2013 Elsevier Ltd. All rights reserved.
Testosterone is the main male hormone that has been associated with various behavioral traits in humans and other animals. We investigated whether levels of total testosterone, free testosterone, and sex hormone binding globulin were associated with temperament traits in a population-based sample of Finnish men at two measurement times taken 6 years apart (n = 686 in year 2001, n = 727 in year 2007). Temperament was assessed using the Temperament and Character Inventory that consists of four temperament traits: novelty seeking, harm avoidance, reward dependence, and persistence. Higher levels of total and free testosterone were associated with higher novelty seeking (standardized B = 0.103, p < 0.001). This association was also observed in a longitudinal within-person analysis (B = 0.084, p = 0.008), suggesting that the association is not confounded by stable between-individual differences in other characteristics. Within-individual variation in total testosterone was associated with higher reward dependence, and higher levels of free testosterone were marginally associated with higher reward dependence. Reward dependence reflects the importance of social rewards to an individual. These results provide additional evidence for the stable and time-varying associations between testosterone and temperament in humans. (C) 2013 Elsevier Ltd. All rights reserved.
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