— MBTI & IQ Research
INFJ IQ — what's the average for The Advocate?
The average reported IQ for INFJ (The Advocate) across published MBTI cognitive studies sits around 120 — placing the typical INFJ in the 91th percentile of the general population.
INFJs show strong verbal-conceptual ability and above-average performance on abstract reasoning. Ni dominance correlates with synthesis.
Why INFJs tend to score where they do
MBTI type is not a measurement of intelligence — it's a personality typology rooted in Jung's cognitive function theory. But certain dominant function patterns correlate with cognitive task performance:
- Introversion — tends to favour deep, sustained processing of abstract material
- Intuition (N) — correlates with strong fluid reasoning and pattern recognition on IQ tests, which is part of why NT types consistently score highest
- Feeling (F) — correlates with verbal-conceptual reasoning strength
- Judging (J) — has the weakest individual correlation with IQ; matters more for working style than raw ability
The honest caveat
Average IQ by MBTI type is a statistical tendency, not a rule. The standard deviation within any single type is typically 12-15 IQ points — which means there are INFJs scoring well above 145 and INFJs scoring below 90. The type tells you nothing about any individual's actual cognitive ability.
If you want to know YOUR actual IQ rather than the average for your MBTI type, take a properly calibrated test that uses real psychometric scoring (IRT 3PL Bayesian MAP estimation) rather than a quick quiz.
How INFJ compares to other types
- ENTP — average IQ 121 (The Debater)
- ENTJ — average IQ 122 (The Commander)
- INFP — average IQ 117 (The Mediator)
- ISTP — average IQ 117 (The Virtuoso)
- ENFJ — average IQ 116 (The Protagonist)