engleski

Twin study of generalized prejudice

Prejudice is an unfavorable opinion or feeling toward members of other groups prior to or not based on actual experience. Different individuals have (or do not have) prejudice toward members of different groups. However, a person who is anti- homosexual is likely to be anti-immigrant, or anti-atheist, leading to the concept of generalized prejudice which typically explains around 50 percent of the variance of prejudice toward different groups. Dispositional approach to prejudice situates individual differences in generalized prejudice into the frame of other dispositions. In this study we examined the relations between generalized prejudice, personality and intelligence on the sample of 836 twins. We used measures of anti-atheist, anti- immigrant, and anti-gay prejudices to measure generalized prejudice, together with measure of the six factor personality model (HEXACO), and intelligence. The aims were: i) to examine the phenotypic relationships between prejudice, personality and intelligence ; ii) to examine the heritability of generalized prejudice ; iii) to examine the genetic/environmental structure of prejudices ; and iv) to examine genetic and environmental overlap between generalized prejudice, personality, and intelligence. Results suggest several conclusions: i) the generalized prejudice model is plausible both at the phenotypic and genetic level ; ii) genetic, shared and non-shared environmental influences contribute to individual differences in individual as well as in generalized prejudice iii) phenotypic overlap between generalized prejudice and openness is primarily due to the overlap between genetic effects, while phenotypic overlap between crystalized intelligence and generalized prejudice is due to overlap of genetic and environmental influences.

prejudice ; generalized prejudice ; personality ; intelligence ; twin study

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