IQ Required by Profession

Understanding IQ Requirements by Career

IQ, or Intelligence Quotient, measures cognitive ability on a standardized scale where 100 is the population average and the standard deviation is 15 points. Different professions tend to attract and select for different cognitive profiles — STEM careers and medical specialties like neurosurgeons and aerospace engineers typically average 115–135, while skilled trades and service roles cluster around 95–110.

These averages reflect the cognitive demands of each profession, including the complexity of problem-solving, abstract reasoning, and information processing required daily. However, they represent group trends, not individual requirements. Within every profession, individual IQ scores span a wide range, typically 20–30 points above and below the average. To find out where you fall, use our IQ Percentile Calculator or explore what your IQ score means.

How IQ Relates to Career Success

Research shows a moderate correlation (r ≈ 0.5) between IQ and job performance, particularly for complex occupations. Higher-IQ professions tend to involve more abstract reasoning, novel problem-solving, and rapid information processing. Lower-average-IQ professions often emphasize physical skills, interpersonal abilities, or practical expertise that IQ tests don't fully capture.

Importantly, IQ is just one predictor of career success. Conscientiousness, emotional intelligence, domain expertise, social skills, creativity, and opportunity all play critical roles. Many high-performing professionals in every field have average IQ scores, while many high-IQ individuals thrive in fields with modest average scores. Use these data as context, not career prescriptions. For more on how cognitive ability interacts with career outcomes, read our research on cognitive job fit.

About Our Data

The IQ averages presented here are compiled from multiple peer-reviewed sources, including Wonderlic personnel test data, occupational cognitive studies (Hauser, 2002), and meta-analyses of cognitive ability and occupational attainment (Schmidt & Hunter, 1998). Salary data comes from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program. Growth outlook projections are based on BLS Employment Projections.

All figures represent statistical averages and should be interpreted with appropriate caution. Individual variation within each profession is always larger than differences between professions. For a deeper look at any specific career, click through to its detailed profession page for IQ distribution data, cognitive domain breakdowns, and related career paths.

Frequently Asked Questions