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Featured researches published by Tena Vukasović.


Psychological Bulletin | 2015

Heritability of Personality : A Meta-Analysis of Behavior Genetic Studies

Tena Vukasović; Denis Bratko

The aim of this meta-analysis was to systematize available findings in the field of personality heritability and test for possible moderator effects of study design, type of personality model, and gender on heritability estimates. Study eligibility criteria were: personality model, behavior genetic study design, self-reported data, essential statistical indicators, and independent samples. A total of 134 primary studies with 190 potentially independent effect sizes were identified. After exclusion of studies that did not meet inclusion criteria and/or met 1 of the exclusion criteria, the final sample included 62 independent effect sizes, representing more than 100,000 participants of both genders and all ages. Data analyses were performed using the random-effects model, software program R package metafor. The average effect size was .40, indicating that 40% of individual differences in personality were due to genetic, while 60% are due to environmental influences. After correction for possible publication bias the conclusion was unaltered. Additional analyses showed that personality model and gender were not significant moderators of personality heritability estimate, while study design was a significant moderator with twin studies showing higher estimates, .47, compared to family and adoption studies, .22. Personality model also was not a significant moderator of heritability estimates for neuroticism or extraversion, 2 personality traits contained in most personality trait theories and/or models. This study is the first to empirically test and confirm moderator effect of study design on heritability estimates in the field of personality. Limitations of the study, as well as suggestion for future studies, are discussed. (PsycINFO Database Record


Journal of Sleep Research | 2014

Sleep duration and personality in Croatian twins

Ana Butković; Tena Vukasović; Denis Bratko

The objective of this study was to examine which genetic and environmental influences contribute to individual differences in sleep duration in a sample of Croatian adolescent/early adult twins, as well as to investigate the relationship between personality and sleep duration. Participants included 339 twin pairs (105 monozygotic and 234 dizygotic) aged between 15 and 22 years. They reported on their average sleep duration and personality. The broad heritability estimate (additive and non‐additive genetic influences) for sleep duration was 0.63, while personality estimates ranged between 0.47 and 0.62. Significant negative phenotypic associations with neuroticism and openness were mainly genetically mediated 100 and 80%, respectively. Only 6% of the sleep duration variance was explained by genetic influences shared with neuroticism and openness. In regression analysis, age, gender and five personality traits explained 5% of sleep duration variance, with neuroticism and openness as significant predictors. Comparison of short, moderate and long sleepers showed that participants in the short sleepers group had significantly higher neuroticism scores than groups of moderate and long sleepers, as well as a significantly higher openness score than the group of long sleepers. This indicates that personality traits of neuroticism and openness contribute to the prediction of sleep duration due to overlapping genetic influences that contribute to both these personality traits and sleep duration. However, as phenotypic overlap of personality and sleep duration is relatively weak, heritability of sleep duration is not only related to individual differences in personality traits, so future research needs to examine other phenotypic correlates of sleep duration.


Intelligence | 2012

Cognitive ability, self-assessed intelligence and personality: Common genetic but independent environmental aetiologies

Denis Bratko; Ana Butković; Tena Vukasović; Tomas Chamorro-Premuzic; Sophie von Stumm


Journal of Child and Family Studies | 2014

Personality Resemblance Between Parents and Offspring: Study of Five Factors Across Four Samples and Questionnaires

Denis Bratko; Ana Butković; Tena Vukasović; Gordana Keresteš; Irma Brković


Drustvena Istrazivanja | 2012

Genetic Contribution to the Individual Differences in Subjective Well-Being: A Meta-Analysis

Tena Vukasović; Denis Bratko; Ana Butković


Savremeni trendovi u psihologiji 2015: Knjiga sažetaka | 2015

Heritability of Five-factor personality domains: Comparison of the Serbian and Croatian twin studies

Denis Bratko; Snežana Smederevac; Ana Butković; Tena Vukasović; Petar Čolović


Savremeni trendovi u psihologiji 2015: Knjiga sažetaka | 2015

Croatian twin study of physical activity and personality

Ana Butković; Tena Vukasović; Denis Bratko


17th European Conference on Personality | 2014

Traits and needs as predictors of life satisfaction: A behavioral genetics perspective

Denis Bratko; Ana Butković; Tena Vukasović


XVIII. Dani psihologije u Zadru | 2012

Konformizam i glazbene preferencije adolescenata

Filip Užarević; Matej Pavlić; Ana Butković; Tena Vukasović; Denis Bratko


42nd Annual Meeting of the Behavior Genetics Association | 2012

Genetic influences on sleep duration and overlap with personality

Ana Butković; Tena Vukasović; Denis Bratko

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