Widowhood and the Stability of Late Life Depressive Symptomatology in the Swedish Adoption Twin Study of Aging

被引:0
作者
Christopher R. Beam
Robert E. Emery
Chandra A. Reynolds
Margaret Gatz
Eric Turkheimer
Nancy L. Pedersen
机构
[1] University of Virginia,Department of Psychology
[2] University of California,undefined
[3] University of Southern California,undefined
[4] Karolinska Institute,undefined
来源
Behavior Genetics | 2016年 / 46卷
关键词
Depressive symptomatology; Late life depression; Reciprocal effects model; Gene-environment correlation; Nonshared environment;
D O I
暂无
中图分类号
学科分类号
摘要
Although the Swedish Adoption Twin of Aging (SATSA) has been used to investigate phenotypic stability of late life depressive symptoms, the biometric processes underlying this stability have not been studied. Under a reciprocal effects modeling framework, we used SATSA twins’ Center for Epidemiologic Studies Depression (CES-D) Scale data across 5 waves (from 1987–2007) to test whether the reciprocal exchange between twins within a family and their nonshared environments (P<=>E) promote the accumulation of gene-environment correlation (rGE) over time. The model generates increasing rGE that produces subsequent stable environmental differences between twins within a family—a process hypothesized to explain stability in chronic late life depressive symptoms. Widowhood is included as a stressful life experience that may introduce an additional nonshared source of variability in CES-D scores. Genetic effects and nonshared environmental effects are primary sources of stability of late life depressive symptoms without evidence of underlying rGE processes. Additionally, widowhood explained stable differences in CES-D scores between twins within a family up to 3 years after spousal loss.
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页码:100 / 113
页数:13
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