The relationship between Student's Personality Traits and Their Blood Types

The ABO blood types are thought to affect the roots of human behavior and act as a predictor of individuals’ personality. The present study aimed to evaluate the relationship between personality factors and the ABO blood group. This cross-sectional study used quota, convenience sampling to select 160 students from Shahid Beheshti University of Medical Sciences (Tehran, Iran). The Neuroticism, Extraversion, Openness Five-Factor Inventory (NEO-FFI) was used to determine the subjects’ personality traits. Blood type of the participants was confirmed based on official documents. The collected data was analyzed using chi-square test in SPSS16. There were no significant differences in the prevalence of personality traits between different blood types or the two genders. According to the controversial and inconsistent results from different sources, ABO blood types do not seem to have significant associations with personality traits.