Abstract
The relationship between blood type and personality has long been one of
the more challenging issues of scientific studies. Several large-scale
surveys were conducted to address the issue, and some of them had shown
statistically significant associations. This study analyzed data from
two large-scale surveys (Survey 1: N = 1,000, Survey 2: N = 1,859) to
examine the relationship between blood type and personality. ANOVA
results indicated that 17 of the total 20 respondents’ own blood type
characteristic question items scored higher as “fit to my personality”
than the averages of the other blood types. In both Survey 1 and 2, the
same differences in scores were found in the groups who reported no
blood type personality knowledge, although the values were smaller.
Thus, we observed a clear and significant relationship between blood
type and personality in large-scale surveys.