Relationship between inherited genetic properties and personality characteristics are confirmedin many studies. It is assumed that blood groups have genetic properties and predictors of personality characteristics. In the present study, the association between type A personality with ABO blood groups were examined. The study was conducted on 400 students of Kurdistan University of Applied Science, using available sampling and Type A Questionnaire (TAQ). individual`s blood group was authenticated. The results of one way ANOVA and post hoc LSD tests showed that, there was a statistically significant difference between O blood group than Bblood group and O blood groupthan AB blood group (P <.05) in non-toxic type A personality (TA2).
