Average IQ of Nurses: How Smart Is the Profession?

Average IQ by profession: where nursing sits

The table below places nursing roles alongside other occupations, using estimates from the NLSY79 reanalysis where available (percentiles assume the standard mean of 100 and a standard deviation of 15). Nursing roles are highlighted.

A clear ladder appears within healthcare itself. Physicians sit near the 95th percentile, pharmacists in the low-to-mid 110s, and registered nurses just above or right around the 60th–75th percentile depending on the dataset. Licensed practical nurses and nursing aides — roles with shorter training pathways — cluster nearer the population average or below. The pattern tracks how much abstract, credential-heavy schooling each role requires, which is exactly what these tests were built to predict.

One caveat worth stating plainly: registered nursing usually requires a bachelor's degree, yet the occupational figure (104) sits below the typical IQ average for bachelor's holders. That gap suggests nursing draws talent that is strong on the practical and interpersonal side rather than selecting purely for peak test performance.

How nurses compare to other health professions

Nurses do not top the healthcare IQ chart — physicians and pharmacists edge ahead on paper — but the comparison misses the point of the job. The historical record shows the same thing. In the classic Harrell and Harrell 1945 study of Army General Classification Test scores across civilian occupations, higher-credential jobs consistently posted higher mean scores, while hands-on caregiving roles clustered nearer the middle. Eighty years later, the ranking order has barely moved.

What has changed is our understanding of what those middle-of-the-pack numbers actually mean for patient care. A registered nurse scoring at the 65th percentile is not a "worse thinker" than a surgeon at the 95th. She is doing a fundamentally different cognitive job: monitoring a dozen patients at once, catching a subtle change in color or breathing before a monitor alarms, and translating a physician's order into safe, humane action. IQ tests were never designed to measure that.

Why IQ is only part of what makes a good nurse

Here is the caveat that matters most. IQ predicts a slice of nursing performance — the medication math, the protocol memorization, the diagnostic reasoning — but it is silent on the qualities patients and colleagues actually rank first.

Peer-reviewed nursing research keeps landing on the same finding: emotional intelligence and empathy are core clinical skills, not soft extras. One 2025 study reported that emotional intelligence and nursing empathy together explained about 39% of the variance in moral sensitivity — the capacity to recognize the ethical stakes in a bedside decision. Other studies link emotional intelligence directly to clinical competence and confident decision-making in high-pressure units. None of that shows up on a standard IQ test.

Add the parts no cognitive score captures at all: twelve-hour shifts on your feet, staying calm when a patient crashes, breaking bad news gently, and noticing the thing that is "just a little off." A brilliant test-taker who cannot do those things will not last a week. That is why the average IQ of nurses is an interesting data point — and a poor way to judge any individual nurse.

FAQ

Q: What is the average IQ of a nurse?

A: Roughly 103 to 111, depending on the dataset — above the population average of 100. Occupational-IQ charts place registered nurses in the low 110s (about the 75th percentile), while the more rigorous NLSY79 national survey puts them near 104 (about the 61st percentile). All of these are group estimates, not requirements.

Q: Do nurses have a higher IQ than doctors?

A: No, on average. In the NLSY79 data, physicians and surgeons average about 123.7 (near the 95th percentile) versus about 104 for registered nurses. The gap mostly reflects the years of abstract, credential-heavy schooling medicine requires — not a difference in who provides better bedside care.

Q: Do you need a high IQ to become a nurse?

A: Not an exceptional one. Nursing draws on solid above-average reasoning plus strong memory and numeracy, but the profession selects heavily for empathy, stamina, communication, and judgment under pressure — traits an IQ test does not measure. Many excellent nurses would score around the population average.

Q: Is IQ a good measure of how good a nurse is?

A: Only partially. IQ correlates with the technical side of nursing, but research consistently finds emotional intelligence and empathy predict clinical competence and ethical decision-making. A test score cannot tell you who will be a great nurse.

References

1. Cogn-IQ.org — Cognitive Ability Across Occupations: A Reanalysis of the NLSY79 Armed Forces Qualification Test Data
2. Cogn-IQ.org — Average IQ of a Registered Nurse: 104 (NLSY79 Data)
3. Harrell, T. W., & Harrell, M. S. (1945). Army General Classification Test Scores for Civilian Occupations. Educational and Psychological Measurement.
4. Ibrahim et al. (2025). The Nexus of Emotional Intelligence, Empathy, and Moral Sensitivity: Enhancing Ethical Nursing Practices in Clinical Settings. Journal of Nursing Management.

Last updated: July 13, 2026