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ABO FAN


Blood type studies in Korea

  Suddenly, Korea becomes one of the hottest counties on blood type debate.  I find several blood-type studies in Korea even in Psychology Journal!
  The followings are those.
  An article by Professor Sohn (Yonsei University) has an great impact which really changes the blood-type world!

Article No.1

Title : [Article in Korean] A Review of Sociocultural, Behavioral, Biochemical Analyses on ABO Blood-Groups Typology
Author : Sung Il Ryu , Young Woo Sohn
Source : The Korean Psychological Association , The Korean Journal of Social and Personality Psychology / 21 Vol 3 No
27 ~ 55, All 29 pages
Year : 2007
Keywords : Blood-groups, Personality, Typology, Neurotransmitter, Intermediate dominance
Abstract : This study provided a summary of existing research results on blood-groups typology and examined the relationship between blood groups and personality. Using a meta-analytic method, we computed scores that indicate the relationship between blood groups and each of five trait measures (introversion, leadership, emotional stability, logical thinking, and consideration). In addition to the behavioral data analyses, we reviewed prior research results based on biochemical and sociocultural data analyses. Biochemical peculiarities of ABO blood groups, relationships between blood groups and actions of neurotransmitters, and genetic effects of multiple alleles on blood groups were also discussed.

Article No.2

Title : [Article in Korean] Does Love Depend on Blood Types?: Blood Types, Love Styles, and Love Attitudes
Author : Hyun Duk Joo , Se Nny Park
Source : The Korean Psychological Association , The Korean Journal of Social and Personality Psychology / 20 Vol 3 No
67 ~ 80, All 14 pages
Year : 2006
Keywords : Blood types, Love styles, Love attitudes, MALPS, personality typology
Abstract : This study aimed to measure the relationship between blood types (A, B, O, AB) and love styles, and the association between blood types and love attitudes. Lee's "Love Style Scale" developed by Hendrick & Hendrick (1986), and Me as a Love Partner Scale (MALPS), which measures love partners` attitudes, were administered to 496 subjects. Consistent with past researches related to the association between blood types and personality (Big 5), no meaningful relationship emerged between love styles and blood types, nor between love attitudes and blood types as well. Pseudo-scientific personality typology based on blood types was proved to be invalid to account for the differences among people's love styles or love attitudes. But gender and experience of love relationships can moderate the differences in love attitudes and love styles among blood types. And the possible reasons why people hold the beliefs about the association blood types and personal traits were discussed.

Article No.3

Title : Beliefs about Blood Types and Traits and their Reflections in Self-reported Personality
Author : So Hyun Cho , Eun Kook M. Suh , Yoen Jung Ro
Source : The Korean Psychological Association , The Korean Journal of Social and Personality Psychology / 19 Vol 4 No
33 ~ 47, All 15 pages
Year : 2005
Keywords : Blood types, personality typology, stereotypes, Big 5
Abstract : Individualャs beliefs about the association between blood types (A, B, O, AB) and personality was measured among 204 college students. Participants also rated their own personality on two different measures-the Big 5 inventory and a set of personality traits most frequently associated with each of the 4 blood types (stereotypic traits). Consistent with past research, no meaningful relationship emerged between the Big 5 traits and blood type. Interestingly, however, self-ratings on the stereotypic traits revealed a self-fulfilling pattern. Those who firmly believed in the validity of the blood type stereotypes were more likely to report his/her trait in a stereotype-consistent direction (e.g., a blood type A person reports that she indeed is very "timid"). As expected, such stereotype-confirming tendency was not observed among the skeptics of this stereotype. Overall, the findings suggest that having a strong faith in the blood type stereotype might have a self-confirming effect on self-reports of personality.

Article No.4

Physica A: Statistical and Theoretical Physics
Volume 373, 1 January 2007, Pages 533-540

Blood-type distribution

Beom Jun Kima, Dong Myeong Leeb, Sung Hun Leeb and Wan-Suk Gimc
aDepartment of Physics and Institute of Basic Science, Sungkyunkwan University, Suwon 440-746, Korea
bCollege of Natural Sciences, Ajou University, Suwon 442-749, Korea
cCollege of Social Sciences, Ajou University, Suwon 442-749, Korea
Received 5 January 2006;  revised 27 April 2006.  Available online 21 June 2006.

Abstract

We statistically verify the Hardy–Weinberg principle in genetics by investigating the independence of ABO-blood types of married couples. The allelic frequencies derived from the phenotypic frequencies in ethnic groups via the Hardy–Weinberg principle are used to define a genetic distance (called the blood distance in this work) between two groups. The blood distances are compared with the geographic distances, and then used to construct a network of ethnic groups. We also investigate the relationship between the ABO blood types and the human personalities, gauged by the Myers-Briggs-type indicator (MBTI) psychological test. The statistical χ2-test reveals the independence between the blood types and MBTI results with an exception of type B males. A psychological implication is discussed

(c) 2006 Elsevier Ltd. All rights reserved.

Summary

  The latest study done by Young Woo Sohn, Yonsei University Professor (psychology), is really epoch making!

"Type O is extrovert while type A type is logical",  and put blood-type studies together

<Seoul, Yonhap News Agency> As a result of putting many blood-type personality studies together, type O is tend to be extravert, while type is A introvert.  In most studies, type A is logical and emotionally stable, but type B -- in comparison with other blood types -- is sensitive.
 Researcher Sung Il Ryu, at management of technology subject of Yonsei University graduate school, and professor Young Woo Sohn of psychology subject the same university, clarified it in an article entitled "A Review of Sociocultural, Behavioral, Biochemical Analyses on ABO Blood-Groups Typology" on September 21st.  Blood type and personality is a theme to attract popularity of the public, but it is generally thought that there is no relationship scientifically. The article attracts attention, because it is the first study that synthesized findings of the past blood type typology arguing against this thought. The article is going to be carried by the autumn issue of Korean psychology journal. [the original article is in Korean]

  After reading this article, I got really excited and make much effort to search it.  But I did not know how and finally failed.  Sigh.
  But fortunately, the original article existed in the Internet!

http://www.koreanpsychology.or.kr/eng/sub5.php

  I search it in the word "BLOOD", and the latest article looks like it.

  9. A Review of Sociocultural, Behavioral, Biochemical Analyses on ABO Blood-Groups Typology
  Sung Il Ryu, Young Woo Sohn
  한국심리학회지 사회 및 성격 | 2007

  Unfortunately again, the article is written in Korean (neither Japanese nor English), It is very hard -- more difficult than Greek -- for me to understand the whole article.
  English abstract does not help me to understand.
  Anyway, the list of reference seems very helpful for me.

  However, things become more and more convenient today.  Machine translation is offered freely by many websites.  Therefore I will challenge Korean / Japanese / English translation.

  The following is the summary.

  In this study, he carefully investigated the result of various studies.  The method is simple: the assumed tendency of each blood type (ex. type A is nervous.) gets +1 point and the reverse tendency gets -1 point.  The result (e.g. total) is obvious if we watch the table 5.

  Professor Sohn also said that the Big-Five model cannot sense the difference by blood type.

  I also analyzed the data of So Hyun Cho (2005) [no meaningful difference is found].  The questionnaire paper consists of 40 question items, according to Big-Five standard. I analyzed data, again, for individual question items and find relations with the blood type in 10 question items [the part surrounded in a red line] .  The results were show in table 7.
  There are 4 items which support the fact that type A has considerate characteristics.  And, as for this, type B agrees with findings of D'Adamo (2001) that there is an inclination of the individualism by other blood types.  The data of the considerate characteristics agree with the contents of table 5. Considerate characteristics can confirm for type A, type O, and type AB.
  However, there are two items to support that type O is introverted; contrary to the existing findings (Furukawa, 1927; Furukawa, 1930: Lester, 1987: D'Adamo, 2001). There are no mentioned contents in the existing study that type B is pessimistic is brand new.
  Thus, there are really differences according to the blood type, even a study that the Big-Five model cannot sense them, was confirmed in this way.  Everyone can find a new result of relationship between blood type and personality, if one chooses the appropriate analysis method, even if no difference seems to appear.

Table 7  Reanalysis of So Hyun Cho's Data

 

  This is really a Sohn's magic!

  But there seems to be some slightest mistakes for this commentary (though they will not hurt the value of this splendid study at all).  They are ...

  However, there are two items to support that type O is introverted; contrary to the existing findings (Furukawa, 1927; Furukawa, 1930: Lester, 1987: D'Adamo, 2001). There are no mentioned contents in the existing study that type B is pessimistic is brand new.

  About type O, two reverse traits appeared, but this is not mysterious, because he seemed to take the level of significance to 5% in this study.  Taking the level of significance to 5%, one wrong result appears in every 20 items in average.  In other words, we will get two wrong results out  of every "40 question items".   This time, by chance, he may get two wrong results of type O.  In the same way, I am not surprised to hear that type B is pessimistic.

(June 20, 2008)


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Last update: June 20, 2008.