Posted by Tal on June 04, 1999 at 13:44:42:
Hey all,
Some of you may have noticed Becca recently added an "MBTI type" field to the online RHETI test. She was kind enough to let me analyze about a month's worth of results in order to (hopefully) once and for all nail down the truth about those sneaky correlations.
The results were, to say the least, interesting. I've summarized some of the most pertinent information below; I also wrote a much more detailed article which Becca may post on the site later.
I won't bother going into detail about the methodology right now; briefly, I correlated only very high scores on the RHETI (24+) to the respective MBTI type. In this way the 'uncertainty' factor was eliminated as best it could be. There were a total of 1,417 results, so at the very least no one can complain the results are not statistically valid. :)
Below are the strongest correlations to Enneagram type by MBTI type in descending order. The numbers in parentheses indicate respective correlational strength--the strength of a particular correlation relative to the statistical average. E.g. INTP's, with a correlational strength of 3.99, are about 4 times as likely to be Fives as the statistical average would indicate.
INTP: 5, 4 (3.99, 1.47)
INFP: 4, 9 (2.36, 1.70)
INTJ: 1, 5 (3.58, 2.19)
INFJ: 4, 9 (1.92, 1.62)
ISTP: 6, 5 (2.94, 2.92) - results suspect (only 20 scores where the average was 95)
ISFP: 6, 9 (2.45, 2.13)
ISTJ: 6, 1 (4.39, 3.57)
ISFJ: 6, 9 (4.56, 1.86)
ENTP: 7, 3 (3.63, 2.44)
ENFP: 7, 2 (3.13, 2.18)
ENTJ: 8, 3 (5.39, 3.66)
ENFJ: 3, 2 (3.05, 2.88)
ESTP: negligible (only 7 results; indicative of an SP trend of abstinence)
ESFP: 2, 7 (2.94, 1.47)
ESTJ: 8, 3 (7.34, 4.27)
ESFJ: 2, 6 (2.57, 2.16)
As can be clearly seen, there are many very strong correlations. The results here are not corrected for attenuation, but they are very close to what they should be. ISTP and ESTP results should be treated with skepticism; other types to beware of are ISTJ (corrected for attenuation 1 is slightly stronger than 6) and ENTJ/ESTJ (correlations to 8, while very strong, are probably not quite that strong--there was a dearth of 8 respondents). Finally, ENFP and ESFP present a unique problem discussed in the paper.
And results by Enneagram type (tentative stronger correlations in brackets):
1: ISTJ, INTJ (ITJ)
2: ESFJ, ENFJ (EF)
3: ESTJ, ENTJ (ETJ)
4: INFP, INFJ (INF)
5: INTP, INTJ (INT)
6: ISFJ, ISTJ (ISJ)
7: ENFP, ENTP (ENP)
8: ESTJ, ENTJ (ETJ)
9: ISFP, ISFJ (ISF)
And the award goes to type(s)...
most introverted: 5, 4 (others fairly far behind)
most extroverted: 7, 2 (ditto, more so for the 7)
most intuitive types: 5, 4 (7 not far behind)
most sensitive types: 6 (no other types were clear-cut S's)
most thinking types: 1, 8, 5 (rest are far behind)
most feeling types: 2, 7,9,4 (after 2 the rest were all distant seconds)
most judging types: 1, 8 (the 1 was wayyyyyy on the judging side)
most perceiving types: 7, 4, 5 (after the 7 things get close)
Most of these trends are very reliable, with the exception of intuitiveness, which is hard to judge due to the fact that nearly 80% of all respondents were N's (this in itself constitutes an amazing trend).
There's no end of other information that can be derived from the raw results. Hopefully the full tables will appear on the site in the near future; for now any questions regarding the results are welcome.
---Tal