MBTI
What Myers-Briggs gets right, where it falls apart, and why your four-letter type keeps changing. Evidence instead of type-tribe loyalty.
Am I an Introvert or an Extrovert? Why Most People Are Neither
Extraversion is a scale, not a switch, and most people sit near the middle. What separates the two ends, why you can score as both, and what the label is for.
8 min readBig Five
ENFJ in Big Five Terms: Warmth With Follow-Through
ENFJ maps onto four Big Five traits — an unusual combination of warmth, drive and abstraction. Here is the translation, and the trait the four letters leave out.
8 min readBig Five
ENTJ in Big Five Terms: The Two Traits Doing the Work
ENTJ maps to high Extraversion, high Openness, low Agreeableness and high Conscientiousness. The translation, the two traits that drive the results, and the one the label never measures.
8 min readBig Five
ENTP in Big Five Terms: Why the Arguing Is a Trait
ENTP maps to high Extraversion, high Openness, low Agreeableness and low Conscientiousness. The translation, why two of those traits produce the debating reflex, and the trait the letters miss.
8 min readBig Five
ESFJ in Big Five Terms: The Trait Behind the Effort
ESFJ maps onto four Big Five traits, including the pair that makes other people's comfort feel like your responsibility. Here is the translation and what it leaves out.
8 min readBig Five
ESFP in Big Five Terms: More Than the Fun One
ESFP maps onto four measurable Big Five traits. Here is the translation, what the label consistently undersells, and the trait it never collects at all.
8 min readBig Five
ESTJ in Big Five Terms: The Cost of Being Right
ESTJ maps onto four measurable Big Five traits. Here is the translation, the combination that makes it effective, and the trait the type label never collects.
8 min readBig Five
ESTP in Big Five Terms: Built for Now, Not for Later
ESTP maps onto four measurable Big Five traits, including the pair that makes the present far more compelling than the plan. Here is the translation.
8 min readBig Five
INFJ in Big Five Terms: What the Rare Label Hides
INFJ maps to low Extraversion, high Openness, high Agreeableness and high Conscientiousness. The translation, why the rarity figure is an artefact, and the trait the label skips.
8 min readBig Five
INFP in Big Five Terms: The Trait Behind the Guilt
INFP maps to low Extraversion, high Openness, high Agreeableness and low Conscientiousness. The translation, the trait that gets misread as laziness, and what the label leaves out.
8 min readBig Five
INTP in Big Five Terms: Ideas Without the Follow-Through
INTP translates into four Big Five traits — including the combination that reliably produces more ideas than finished projects. Here is the mapping, and the trait it omits.
8 min readBig Five
ISFJ in Big Five Terms: Where the Tiredness Comes From
ISFJ translates into four Big Five traits — two of which reliably combine into over-commitment. Here is the mapping, and the trait the four letters never measure.
8 min readBig Five
ISFP in Big Five Terms: Why Structure Feels Wrong
ISFP translates into four measurable Big Five traits, including the one that makes systems feel like cages. Here is the mapping and the trait it leaves out.
8 min readBig Five
ISTJ in Big Five Terms: The Most Underrated Score
ISTJ maps to low Extraversion, low Openness, low Agreeableness and high Conscientiousness. The translation, why the J is the best-evidenced predictor of job performance, and the trait the label omits.
8 min readBig Five
ISTP in Big Five Terms: Competence Without the Plan
ISTP maps onto four Big Five traits, including the combination that produces skill without structure. Here is the translation and the trait the label never measures.
8 min readBig Five
The Worst Way to Use a Personality Test (Avoid This)
Personality tests can be useful at work. They can also do real damage when used wrong. Here are the four failure modes that quietly hurt teams and how to avoid them
7 min readSelf-awareness
Big Five vs MBTI: What 16Personalities Won't Tell You
16Personalities feels accurate because MBTI-style descriptions are built to feel accurate. Here is what the actual research says, and what a real personality measurement looks like.
10 min readBig Five
Big Five vs MBTI: What the Research Actually Says
MBTI feels useful, but the science backs the Big Five instead. Here's what 50 years of research shows, and why it matters for how you read your results.
8 min readBig Five
ENFP in Big Five Terms: Each Letter Translated Into Trait Scores
ENFP in Big Five terms: high Extraversion, high Openness, high Agreeableness, lower Conscientiousness — letter by letter, plus the trait the MBTI skips.
8 min readBig Five
INTJ in Big Five Terms: What Your Four Letters Actually Measure
INTJ maps to low Extraversion, high Openness, low Agreeableness and high Conscientiousness. The facet-by-facet translation, the trait MBTI never scores, and where the mapping breaks.
8 min readBig Five
Is the MBTI Scientific? The 1991 NAS Review and the Test-Retest Data
The National Academy of Sciences' 1991 MBTI verdict — 'not sufficient, well-designed research' — quoted with full citation, plus the 39-76% retest problem.
8 min readScience
What the MBTI Actually Gets Right (a Steelman)
The MBTI has real validity problems. It also captures something the research-backed alternatives often miss. Here is the honest steelman case
7 min readScience
MBTI to Big Five Converter: Your Four Letters as Trait Scores
Turn your four MBTI letters into Big Five trait scores. E is Extraversion, N is Openness, F is Agreeableness, J is Conscientiousness, and MBTI skips the fifth trait entirely.
7 min readBig Five
5 Personality Test Myths the Research Quietly Killed
Five widely repeated claims about personality tests that the research does not actually support — from type stability to the idea that tests measure who you are
8 min readScience
A Short History of Personality Testing: From Galton to Big Five
How personality testing went from Victorian-era word-counting to the Big Five — and why MBTI took over the popular market while researchers moved elsewhere
8 min readScience
Why Personality Tests Are Having a Moment (Again)
The MBTI started in corporate training and went viral on TikTok. Here is what the cultural pattern actually tells us about why personality tests keep coming back
7 min readScience