In this study the relationship between two important variables, namely blood group and big five personality traits, are determined in the research framework. Many statisticians have incorporated the fivefactor model and the NEO Personality Inventory, both describing various aspects of personality including the five domains of personality—neuroticism, extraversion, openness, agreeableness, and conscientiousness—into determining whether blood type influences personality [1,5,]. In this study, involving about 100 undergraduate medical students who were aware of their own blood groups, participants were asked to rate various aspects of their personality by using personality inventory questionnaire of Buchanan (2001) based on Five Factor Modality (FFM). In our study the difference in ratings for the different blood types is not statistically significant for Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness (p>0.05). So it is concluded that there was no evidence of any association between blood type and personality. However, the study showed weakness such as small sample sizes and unequal sample size, more accurate studies should be performed in the future to confirm or reject the results of this study.

Keywords: Blood Groups; Personality Domains; FiveFactor Modality (FFM).