An examination of environmental and genetic contributions to the determinants of suicidal behavior among male twins

April R. Smith; Jessica D. Ribeiro; Amy Mikolajewski; Jeanette Taylor; Thomas E. Joiner; William G. Iacono

doi:10.1016/j.psychres.2012.01.010

An examination of environmental and genetic contributions to the determinants of suicidal behavior among male twins

April R. Smith
, Jessica D. Ribeiro
, Amy Mikolajewski
, Jeanette Taylor
, Thomas E. Joiner
, William G. Iacono

Psychology (Twin Cities)

Research output: Contribution to journal › Article › peer-review

126 Scopus citations

Abstract

The purpose of the present study was to examine the relative association of genetic and environmental factors with individual differences in each of the proximal, jointly necessary, and sufficient causes for suicidal behavior, according to the Interpersonal-Psychological Theory of Suicide (IPTS; Joiner, 2005). We examined data on derived scales measuring acquired capability, belongingness, and burdensomeness (the determinants of suicidal behavior, according to theory) from 348 adolescent male twins. Univariate biometrical models were used to estimate the magnitude of additive genetic (A), non-additive genetic (D), shared environmental (C), and non-shared environmental (E) effects associated with the variance in acquired capability, belongingness, and burdensomeness. The best fitting model for the acquired capability allowed for additive genetic and environmental effects, whereas the best fitting model for burdensomeness and belongingness allowed for shared and non-shared environmental effects. The present research extends prior work by specifying the environmental and genetic contributions to the components of the IPTS, and our findings suggest that belongingness and burdensomeness may be more appropriate targets for clinical intervention than acquired capability as these factors may be more malleable or amenable to change.

Original language	English (US)
Pages (from-to)	60-65
Number of pages	6
Journal	Psychiatry Research
Volume	197
Issue number	1-2
DOIs	https://doi.org/10.1016/j.psychres.2012.01.010
State	Published - May 15 2012

Bibliographical note

Funding Information:
This research also was supported, in part, by a grant awarded to Florida State University by the Department of Defense . The Department of Defense had no further role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; and in the decision to submit the paper for publication. The views and opinions expressed do not represent those of the Department of Defense or the United States Government.

Funding Information:
This study was funded, in part, by National Institute of Mental Health grant F31MH083382 to A. R. Smith (under the sponsorship of T.E. Joiner) and by DA05147 to W.G. Iacono.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being

Keywords

Heritability
Suicidal behavior
Suicidal ideation
Suicide
Twin studies

Publisher link

10.1016/j.psychres.2012.01.010

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abstract = "The purpose of the present study was to examine the relative association of genetic and environmental factors with individual differences in each of the proximal, jointly necessary, and sufficient causes for suicidal behavior, according to the Interpersonal-Psychological Theory of Suicide (IPTS; Joiner, 2005). We examined data on derived scales measuring acquired capability, belongingness, and burdensomeness (the determinants of suicidal behavior, according to theory) from 348 adolescent male twins. Univariate biometrical models were used to estimate the magnitude of additive genetic (A), non-additive genetic (D), shared environmental (C), and non-shared environmental (E) effects associated with the variance in acquired capability, belongingness, and burdensomeness. The best fitting model for the acquired capability allowed for additive genetic and environmental effects, whereas the best fitting model for burdensomeness and belongingness allowed for shared and non-shared environmental effects. The present research extends prior work by specifying the environmental and genetic contributions to the components of the IPTS, and our findings suggest that belongingness and burdensomeness may be more appropriate targets for clinical intervention than acquired capability as these factors may be more malleable or amenable to change.",

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note = "Funding Information: This research also was supported, in part, by a grant awarded to Florida State University by the Department of Defense . The Department of Defense had no further role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; and in the decision to submit the paper for publication. The views and opinions expressed do not represent those of the Department of Defense or the United States Government. Funding Information: This study was funded, in part, by National Institute of Mental Health grant F31MH083382 to A. R. Smith (under the sponsorship of T.E. Joiner) and by DA05147 to W.G. Iacono. ",

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An examination of environmental and genetic contributions to the determinants of suicidal behavior among male twins

Abstract

Bibliographical note

UN SDGs

Keywords

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