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Beliefs about Blood Types and Traits and their Reflections in Self-reported Personality

Korean Journal of Social and Personality Psychology / Korean Journal of Social and Personality Psychology, (P)1229-0653;
2005, v.19 no.4, pp.33-47



Abstract

Individuals' beliefs about the association between blood types (A, B, O, AB) and personality was measured among 204 college students. Participants also rated their own personality on two different measures-the Big 5 inventory and a set of personality traits most frequently associated with each of the 4 blood types (stereotypic traits). Consistent with past research, no meaningful relationship emerged between the Big 5 traits and blood type. Interestingly, however, self-ratings on the stereotypic traits revealed a self-fulfilling pattern. Those who firmly believed in the validity of the blood type stereotypes were more likely to report his/her trait in a stereotype-consistent direction (e.g., a blood type A person reports that she indeed is very “timid”). As expected, such stereotype-confirming tendency was not observed among the skeptics of this stereotype. Overall, the findings suggest that having a strong faith in the blood type stereotype might have a self-confirming effect on self-reports of personality.

keywords
Blood types, personality typology, stereotypes, Big 5, 혈액형, 성격, 유사 과학적인 성격 유형학, 혈액형별 성격특징 고정관념, 성격의 5요인(Big5), 믿음

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