PUB - Publikationen an der Universität Bielefeld

Several studies have found a genetic influence on person x situation interactions of behaviours and emotions. For five situations we assessed current positive and negative mood for a sample of 168 monozygotic and 132 dizygotic adult twin pairs completing self-report rating scales. We used structural equation model fitting to estimate genetic and environmental influences on the stability and variability of moods across situations. Our results indicate that genetic as well as shared and nonshared environmental influences contribute to the consistency of moods. Contrary to previous findings, the variability of positive and negative mood is mainly attributed to nonshared environmental influences and only marginally attributed to genetic or shared environmental effects. (C) 1998 John Wiley & Sons, Ltd.