Genetic and environmental contribution to social dominance orientation and its overlap with HEXACO personality traits: a twin study

Bratko, Denis and Matić Bojić, Jelena and Pocrnić, Martina (2021) Genetic and environmental contribution to social dominance orientation and its overlap with HEXACO personality traits: a twin study. Psihologijske teme, 30 (1). pp. 1-29. ISSN 1332-0742 (Print), 1849-0395 (Online)

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Official URL: https://doi.org/10.31820/pt.30.1.1

Abstract

IN ENGLISH: Social dominance orientation (SDO), i.e. the preference toward egalitarian or hierarchically arranged relations within a society may be studied from social/contextual, but also dispositional perspective. The aim of the present study was to explore genetic and environmental contribution to the individual differences in SDO, and its overlap with HEXACO personality traits, both at phenotypic and latent genetic and environmental levels. The sample consisted of 830 Croatian twins aged 19 to 28 years who filled-in the self-report measures. Data analyses indicated the heritability of SDO was over 40%, with no evidence for the common environmental influences. SDO phenotypic variance substantially overlapped with Honesty-Humility, Emotionality, and Openness domains. Numerous significant correlations were found at the facet level, with the highest phenotypic overlap for the “interstitial” altruism facet. However, incremental predictive power of personality (over age and sex) was moderate: 13% and 19% of the phenotypic SDO variance was predicted by HEXACO traits at the domains and facet levels, respectively. Multivariate behavioural genetic analysis indicated that 19% and 3% of the genetic and unique environmental variance of SDO overlapped with the genetic and unique environmental variance of personality, respectively. Substantial genetic correlations of SDO with Honesty-Humility and Openness domains were found, while marginal unique environmental correlation was found for Openness domain only. The etiological overlap between SDO and personality represents an argument in favour of taking dispositional along with social/contextual perspective in explaining social behaviour. --------------- IN CROATIAN: Orijentacija na socijalnu dominaciju (SDO), odnosno sklonost egalitarnim ili hijerarhijski uređenim odnosima unutar društva može se proučavati iz socijalne/kontekstualne, ali i dispozicijske perspektive. Cilj ove studije bio je istražiti genetski i okolinski doprinos individualnim razlikama u orijentaciji na socijalnu dominaciju i njeno preklapanje s HEXACO dimenzijama ličnosti na fenotipskoj te latentnoj genetskoj i okolinskoj razini. Uzorak se sastojao od 830 hrvatskih blizanaca u dobi od 19 do 28 godina koji su ispunili različite mjere samoprocjena. Analize podataka pokazale su da je heritabilnost orijentacije na socijalnu dominaciju preko 40%. Nisu utvrđeni dokazi o dijeljenom okolinskom utjecaju. Fenotipska varijanca orijentacije na socijalnu dominaciju značajno se preklapala s dimenzijama poštenja-poniznosti, emocionalnosti i otvorenosti. Pronađene su brojne značajne korelacije na razini faceta, s najvećim fenotipskim preklapanjem utvrđenim za "intersticijsku" facetu altruizma. Međutim, inkrementalna prediktivna snaga ličnosti (povrh dobi i spola) bila je umjerena: HEXACO osobine na razini dimenzija, odnosno faceta su predviđale 13% i 19% fenotipske varijance orijentacije na socijalnu dominaciju. Multivarijatna bihevioralno-genetička analiza pokazala je da se 19% i 3% genetske i nedijeljene okolinske varijance orijentacije na socijalnu dominaciju preklapa s genetskom, odnosno nedijeljenom okolinskom varijancom ličnosti. Pronađene su značajne genetske korelacije orijentacije na socijalnu dominaciju s dimenzijama poštenje-poniznost i otvorenost, te marginalno značajna korelacija nedijeljene okoline orijentacije na socijalnu dominaciju i otvorenosti. Etiološko preklapanje orijentacije na socijalnu dominaciju i ličnosti argument je za zauzimanje dispozicijske perspektive, pored socijalne/kontekstualne perspektive, u objašnjavanju socijalnog ponašanja.

Item Type: Article
Additional Information: Language: English. - Title in Croatian: Genetski i okolinski doprinos orijentaciji na socijalnu dominaciju i njeno preklapanje s HEXACO dimenzijama ličnosti: studija blizanaca.
Uncontrolled Keywords: Social dominance orientation (SDO), HEXACO, personality, heritability, genetics, twin study (orijentacija na socijalnu dominaciju (SDO), HEXACO, ličnost, heritabilnost, genetika, studija blizanaca)
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Depositing User: Karolina
Date Deposited: 10 May 2021 06:54
Last Modified: 10 May 2021 06:58
URI: http://idiprints.knjiznica.idi.hr/id/eprint/947

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