Twin Research

Articles

Sources of Individual Differences in Stressful Life Event Exposure in Male and Female Twins

P. Kevin Bolinskeya1 c1, Michael C. Nealea2, Kristen C. Jacobsona3, Carol A. Prescotta4 and Kenneth S. Kendlera5

a1 Medical College of Virginia of Virginia Commonwealth University, Richmond, USA. pkbolinskey@vcu.edu

a2 Medical College of Virginia of Virginia Commonwealth University, Richmond, USA.

a3 Medical College of Virginia of Virginia Commonwealth University, Richmond, USA.

a4 Medical College of Virginia of Virginia Commonwealth University, Richmond, USA.

a5 Medical College of Virginia of Virginia Commonwealth University, Richmond, USA.

Abstract

The roles of genetic and environmental influences on stressful life events were examined in 3938 twin pairs (MZ, same-sex DZ, and opposite-sex DZ) using a sex-limitation model. Life events were assessed by personal interview, and were categorized as being either personal (i.e., events that occur directly to the individual) or network (i.e., events that occur to someone within the individual's social network, thus affecting the individual indirectly). Consistent with previous reports, genetic factors were found to exert more influence on personal events than network events. Genetic correlations between males and females suggest that many of the same genetic factors are acting within both genders.

Correspondence:

c1 Address for correspondence: P. Kevin Bolinskey, Virginia Institute of Psychiatric and Behavioral Genetics, 800 East Leigh St., Suite 1, PO Box 980126, Medical College of Virginia, Richmond, VA 23298-0126, USA.

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