Note. Standard deviations are in parentheses. Highest scores that match with blood type characteristics, and p < 0.05 are highlighted in bold. * p < 0.05 after the Bonferroni’s correction.
On question item “Q3 Do you think blood type and personality are related?”, 6.1% of the respondents answered “strongly related”, 35.7% answered “somewhat related”, 28.0% answered “a little related”, 20.1% answered “not related at all”, and 10.1% answered “I don’t know”. On question item “Q4 Do you know the characteristics and compatibility of blood types?”, 4.4% answered “I know well”, 41.4% answered “I know some”, 36.1% answered “I know a little”, and 17.5% answered “I don’t know at all.”

Analysis 2: Cross-tabulation of Knowledge and Personality

For each level of knowledge on blood type and personality, we calculated the corresponding simple averages of the scores answering to “fit to my personality” (Tables 3 and 4, and Appendix B).