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Individual Differences In Ownership Reasoning: A Twin Study, Callista Forchuk
Individual Differences In Ownership Reasoning: A Twin Study, Callista Forchuk
Undergraduate Honors Posters
This study is the first to investigate the extent to which environmental and genetic factors contribute to aspects of ownership reasoning. 65 pairs of adult monozygotic (MZ) twins, and 16 pairs of same-sex dizygotic (DZ) twins completed a 24-item ownership questionnaire, which included items on new ownership and appropriate transfers of ownership. MZ correlations were larger than DZ correlations for both aspects of ownership reasoning, and univariate model fitting indicated that genetic and non-shared environmental factors could account for all individual variation, with shared environmental factors contributing non-significantly. Heritabilities ranged from .36-.57 over both factors. The results support the notion …
A Behavioural Genetics Analysis Of Altruism And Its Relation To The Dark Triad, Maddy Mikulis
A Behavioural Genetics Analysis Of Altruism And Its Relation To The Dark Triad, Maddy Mikulis
Undergraduate Honors Posters
The current study was the first to report a behavioural genetics analysis of altruism and its relationship with the dark triad traits of personality (Machiavellianism, narcissism, and psychopathy). 228 adult twins completed questionnaires of the dark triad and altruism. A significant correlation between altruism and narcissism was revealed. Altruism was found to be influenced in part by genetic factors as well as non-shared environmental factors. Implications and limitations are discussed.