Psychosocial adversity interacts both with neuroticism and with sex in the etiology of major depression. The impact of neuroticism on illness risk is greater at high than at low levels of adversity, while the effect of sex on probability of onset is the opposite--greater at low than at high levels of stress. Complete etiologic models for major depression should incorporate interactions between risk factor classes.
Variation at the 5-HTT moderates the sensitivity of individuals to the depressogenic effects of SLEs largely by producing, in SS individuals, an increased sensitivity to the impact of mild stressors. Replication of these intriguing results is needed.
This study replicates a recent report of a genotype-environment interaction that predicts individual variation in risk for antisocial behavior in boys.
As documented with physiological responses to a standardized laboratory stressor, CSA increases stress sensitivity in women in a more naturalistic setting. Both genetic and early environmental risk factors can produce long-term increase in the sensitivity of individuals to depressogenic life experiences.
Genetic contributions to variation in risk for alcoholism may be mediated in part by individual differences in motivations related to drinking in social settings. Drinking to manage mood indexes genetic risk for alcoholism but does not appear to act as a direct cause of alcoholism.
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