reckful
New member
- Joined
- Jul 6, 2013
- Messages
- 656
- MBTI Type
- INTJ
- Enneagram
- 5
I acknowledge that test results can vary across a timeframe, allowing for the possibility of inconsistent results on the S/N dichotomy. The retest rate consistency overall for subjects is approximately 50% within nine months, while the retest rate after nine months is approximately 36%. I believe it's possible for extenuating life circumstances to skewer one's preferred responses. However, I'm talking about people who consistently test as an N, not people whose S/N results are subject to change.
To maybe clarify, besides being on the low side (in terms of overall test-retest stats for the MBTI), those stats you've cited involve whether you come out the same on all four dimensions. The retest numbers for single dimensions are much higher.
As an example of how that works, if the retest rate for a four-dimension typology averages 88% per dimension, the retest rate for a four-dimension "type" will be 60% (.88 * .88 * .88 * .88).
The test/retest reliability for the MBTI is actually in the same range as for the leading Big Five tests, and if you're interested, there's a longer discussion of that in the Reliability section of this TC Wiki article.
The MBTI's test/retest reliability stats are also discussed in those two official Manual Supplements that I already linked to in this post.