AS A TYPEINFPNear the midpoint on conscientiousness: a small shift would flip the letter.
AS TRAITSHighest on openness (70), lowest on extraversion (30). Neuroticism has no letter in the type at all.
What personality tests are, in short
A personality test describes how you tend to think, feel and behave. Type tests sort you into one of a few categories, while trait tests such as the Big Five place you on continuous scales.
By What's Your IQ · Updated 4 Oct 2026
Most research-backed model
The Big Five (OCEAN)
Type systems
16-type, Enneagram, DISC, temperament
Trait stability
Rises from about .31 in childhood to .74 at ages 50–70
Not suitable for
Diagnosis, or hiring decisions on their own
Three kinds of personality test
Each answers a different question about you. Pick the lane that matches yours.
5 testsTypesWhich category am I closest to?
16-type personality test16 typesYour type among 16, across four preference pairs.
Good for:career choices, team fit and conversations with a manager.
How the frameworks compare
FRAMEWORKWHAT YOU GETRESEARCH BASERETEST STABILITYBEST USED FOR
Big FiveContinuous scoresStrongGoodResearch, self-insight16-typeOne of 16 categoriesMixedModerateWorkshops, language for preferencesEnneagramOne of 9 typesLimitedLimitedReflection, motivationDISCOne of 4 stylesLimitedModerateTeam communicationValuesRanked prioritiesGoodGoodCareer and life choices
Summaries of the general research picture, not judgements of any one commercial instrument. Personality results describe tendencies, not abilities, and aren't a basis for hiring decisions on their own.
WHAT THE RESEARCH SAYS
Traits settle. Types flip.
HOW STABLE YOUR TRAIT RANKING IS, BY AGE
.31Child
Teen
20s
30s
.7450–70
Rank-order consistency rises from about .31 in childhood to about .74 between 50 and 70 (Roberts & DelVecchio, 2000). Middle bars are illustrative of the rising trend.
INF↔TP~Half can get a different type on retestIn samples reviewed by Pittenger (2005), often within weeks. One letter near the midpoint is enough.
.22Conscientiousness and job performanceThe most consistent Big Five predictor across occupations (Barrick & Mount, 1991).
Roberts, B. W., & DelVecchio, W. F. (2000). The rank-order consistency of personality traits from childhood to old age: A quantitative review of longitudinal studies. Psychological Bulletin, 126(1), 3–25.
Barrick, M. R., & Mount, M. K. (1991). The Big Five personality dimensions and job performance: A meta-analysis. Personnel Psychology, 44(1), 1–26.
Pittenger, D. J. (2005). Cautionary comments regarding the Myers-Briggs Type Indicator. Consulting Psychology Journal: Practice and Research, 57(3), 210–221.
Personality tests, explained
The most accurate model
Strongest evidenceBig Five (OCEAN)
Popular for workshops16-typeDISCEnneagram
Trait measures predict real-world outcomes more reliably than type categories.
Types vs traits
TypeA category: one of 16 codesvsTraitA score on a continuous scale
Two people with the same type can differ a lot on the traits underneath.
Change with age
.31 → .74trait stability, childhood to ages 50–70
On average people grow more conscientious and emotionally stable.
Personality at work
.22conscientiousness vs job performance
The most consistent Big Five predictor across occupations, but modest.