Myers-Briggs Is Only Slightly Better Than Astrology
A large study compared the predictive accuracy of the Myers-Briggs, Big Five, and astrology in forecasting real-life outcomes. The Big Five was twice as accurate as the Myers-Briggs, while astrology had zero predictive power. Surprisingly, the Myers-Briggs performed only marginally better than zodiac signs.
- The Big Five personality model had a 0.22 correlation with real-life outcomes.
- The Myers-Briggs-style test scored only 0.11, dropping to 0.08 when using dichotomous types (e.g., E vs. I).
- Astrology showed 0% predictive accuracy across all 42 outcomes measured.
- Myers-Briggs falls exactly halfway between astrology and the Big Five in accuracy.
“Myers-Briggs ideas in our test was exactly halfway between astrology and the Big Five.”