Appendix
A
Question Items of Survey
1
Participants: 1,000 persons
(single men and women in his/her 20s or 30s, age and gender are equally
allocated)
Q1. Please answer the following eight items about your personality.
Answer options
1: It fits to me not at all
2: It fits to me little
3: Cannot say either
4: It fits to me somewhat
5: It fits to me well
Question items
a. I am cooperative
b. I am open in peers
c. Others are hard to understand my personality
d. I am self-paced and hardly affected by others
e. I am thoughtful and take a cautious attitude toward others
f. I have an uneven mood and sometimes it looks like a dual personality
g. I am optimistic
h. I am big-hearted
Q2. Do you think blood type and personality are related?
1: Not related at all
2: A little related
3: Somewhat related
4: Strongly related
5: I don’t know
Q3. Do you know the characteristics and the compatibilities of blood
types?
Answer options
1: I don’t know at all
2: I know a little
3: I know some
4: I know well
Q4. Lastly, please tell us your blood type.
1: Type A
2: Type B
3: Type O
4: Type AB
5: I don’t know
Q5. Gender (based on respondent registration information)
Q6. Age (depending on respondent registration information)
1: Teen or under
2: 20s
3: 30s
4: 40s
5: 50s
6: 60s
7: 70s or over
Question Items of Survey
2
Participants: 2,000 persons
(men and women in his/her 20s to 50s, age and gender are equally
allocated)
Q1. Please answer the following eight items on your personality.
Answer options
1: It fits to me not at all
2: It fits to me little
3: Cannot say either
4: It fits to me somewhat
5: It fits to me well
Question items
a. Meticulous
b. Hard to understand by others
c. Self-paced
d. Positive
e. Dual personality
f. Big-hearted
g. Self-centered
h. Serious
i. Cheerful
j. Loose
k. Genius-like
l. Nervous
The following items m - o are ones to check whether subjects are
extroverted or sociable, rather than examining personality differences
by blood types (little difference among blood types in previous studies)
m. Expressive and delicate
n. Friendly and sociable
o. Good and humane.
Q2. For the 15 items in Question 1, please choose one or more blood
type(s) that you think will apply to your image.
1: Type A
2: Type B
3: Type O
4: Type AB
Q3. Do you think blood type and personality are related?
1: Not related at all
2: A little related
3: Somewhat related
4: Strongly related
5: I don’t know
Q4. Do you know the characteristics and the compatibility of blood
types?
Answer options
1: I don’t know at all
2: I know a little
3: I know some
4: I know well
Q5. Lastly, please tell us your blood type.
1: Type A
2: Type B
3: Type O
4: Type AB
5: I don’t know
Q6. Gender (based on respondent registration information)
Q7. Age (depending on respondent registration information)
1: Teen or under
2: 20s
3: 30s
4: 40s
5: 50s
6: 60s
7: 70s or over