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Each assessment reads a different side of you, so each one narrows the group of people like you. Your 16 Types result alone is shared by 1 in 13 people. Add DISC and the Enneagram and it's 1 in 1,250, about 100 times more specific. Of the people who take all six, 99.3% are already one of a kind. Measured on 13,028 real Crystal users.
More depth does not mean more guesswork: 93.3% of the friends and colleagues who rated someone's Crystal results called them accurate. See the benchmarks
About these numbers
Measured from Crystal's own data on October 2, 2026, using each person's latest result on each assessment. Staff, demo and test accounts are excluded, as are types people typed in rather than tested. “Share your result” is the average, across people, of how many others hold the same result. The 16 types are not evenly spread: the most common is held by 11.9% of people and the rarest by 1.4%. The 100x compares your type alone with your personality blend, on the same 13,028 people (7.9% against 0.08%, 99x, rounded; the blend figure, 1 in 1,248, is shown as 1 in 1,250). The all-six figure is a floor: with 10,327 people, no profile can be measured as rarer than 1 in 10,327. “A single personality test” means one that gives you one of 16 types. Myers-Briggs and MBTI are trademarks of the Myers & Briggs Foundation; Crystal is not affiliated with them. Crystal's own four-letter assessment is the 16 Types.