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Psychiatry Res. 2015 Dec 30;230(3):932-9. doi: 10.1016/j.psychres.2015.11.020. Epub 2015 Nov 17.

Genetic and environmental contributions to perfectionism and its common factors.

Author information

1
Department of Psychiatry, "La Fe" Hospital, Valencia, Spain. Electronic address: iranzotatay@hotmail.com.
2
Psychiatry Investigation Group, Eating Disorders and Children's Psychiatry Department, "La Fe" Hospital, Valencia, Spain.
3
Department of Psychiatry, "La Fe" Hospital, Valencia, Spain.
4
Psychologist, department of Psychiatry, "Hospital Univesitario de Albacete", Spain.
5
Department of Psychiatry, "La Fe" Hospital, Valencia, Spain; CIBER Epidemiology and Public Health (CIBERESP), Spain; Department of Psychiatry, Medicine School, University of Valencia, Spain.
6
Head of Eating Disorders and Children's Psychiatry Department, Hospital General, Ciudad Real, Spain.
7
Department of Psychiatry, Medicine School, University of Extremadura, Spain.

Abstract

The aims of this study: (1) To evaluate the relative contributions of genetics and environment to perfectionism and it's two constructs: self-oriented, and socially prescribed perfectionism. (2) To clarify genetic and environmental common origins of both personal and social components.

METHODS:

Participants were 258 pairs of adolescent Spanish twins. Socially prescribed and self-oriented perfectionism were assessed using the perfectionism subscale of the Eating Disorder Inventory.

STATISTICS:

univariate and bivariate twin models, according to sex. Results; Heritability of self-oriented perfectionism was 23% in boys and 30% in girls, and of socially prescribed perfectionism 39% in boys and 42% in girls. Bivariate analysis suggested a common genetic and environmental pathway model. The genetic correlation between both perfectionisms was 0.981 in boys and 0.704 in girls. The non-shared environmental correlation was 0.254 in boys and 0.259 in girls. Conclusions; genetic influences on perfectionism are moderate during adolescence. Our results point toward a shared genetic component underlying both kind of perfectionism. These findings generate doubts about the hypothesis of a leading role of genetics in the pathogenesis of Self-oriented perfectionism and of environment in socially prescribed. The high genetic correlation seems to indicate that self-oriented and socially prescribed are the same dimension of perfectionism.

KEYWORDS:

Adolescents; Environment; Genetics; Perfectionism; Twins

PMID:
26611155
DOI:
10.1016/j.psychres.2015.11.020
[Indexed for MEDLINE]

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