The total Extraversion-Introversion score is the average of these 5 factors.
Is this standard for the MBTI? I’ve never heard of an MBTI test doing this before—it reminds me more of e.g. NEO-PI-R.
Is there any interesting structure in the distribution of scores across the 4 axes?
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The point described here applies well to MBTI-style tests where one is dichotomized based on continuous variation in individual traits, but I think it applies less well to Enneagram-style tests where one is discretized based on which of several traits on scores highest in.
This is for reasons I explained in LDSL: Realistically, the personality measurements are log scales of traits that follow a ~lognormal distribution. Thus variations near the extremes of the traits matter more than variations near the bulk of the traits, and classifying people by where they are extreme is more useful than classifying people by their normal variation.
Is this standard for the MBTI? I’ve never heard of an MBTI test doing this before—it reminds me more of e.g. NEO-PI-R.
The point described here applies well to MBTI-style tests where one is dichotomized based on continuous variation in individual traits, but I think it applies less well to Enneagram-style tests where one is discretized based on which of several traits on scores highest in.
This is for reasons I explained in LDSL: Realistically, the personality measurements are log scales of traits that follow a ~lognormal distribution. Thus variations near the extremes of the traits matter more than variations near the bulk of the traits, and classifying people by where they are extreme is more useful than classifying people by their normal variation.
The test we used did, I have very little further knowledge of the MBTI other than what was discussed on this course.