Is an IQ of 78 Good? What It Means & Where You Stand

What Does an IQ of 78 Mean?

An IQ of 78 is in the borderline range, just below the low average threshold of 80. About 7% of the population scores at or below this point. People at this level can manage most aspects of daily life independently and are capable of learning practical skills effectively. The gap between 78 and the average of 100 is smaller in real-world impact than most people assume — many successful workers, parents, and community members have IQ scores in this range.

An IQ of 78 places you at the 7th percentile, which means you scored higher than approximately 7% of the general population on a standardized intelligence test. This score falls into the Borderline range on the IQ scale. With a rarity of 1 in 14, this score is less common, but IQ is just one measure of cognitive ability.

To understand how IQ scores are calculated and what they measure, see our complete guide on what IQ is and how it works. For a full breakdown of all score ranges and their meanings, visit our IQ score ranges page.

Career Context for an IQ of 78

People with an IQ of 78 succeed in many careers that emphasize practical skills and hands-on learning. Retail, food service, warehousing, landscaping, janitorial work, and entry-level manufacturing are all accessible paths. With experience and on-the-job training, many advance to supervisory positions where their practical knowledge is valued.

Cognitive Profile at IQ 78

At IQ 78, the borderline profile shows solid verbal reasoning across diverse topics and increasingly reliable fluid intelligence on structured and moderately novel problems. Verbal comprehension handles extended texts on complex topics with inferential reasoning reliably accessible. Working memory holds 7 items with rehearsal. Processing speed is at the 16th–17th percentile. Fluid intelligence shows genuine problem-solving flexibility across concrete and moderately abstract domains. Reading typically reaches 10th–11th grade level, enabling confident engagement with most adult written materials. Mathematical competence includes all operations, algebraic reasoning, and basic statistical concepts. High school completion is the clear majority outcome with consistent effort. Community college coursework in vocational and technical areas is accessible and achievable. Social reasoning and interpersonal competence are typically indistinguishable from low-average peers in everyday contexts.

What Research Says About IQ 78

NLSY79 data show IQ 78 individuals achieving high school completion rates near 76%, community college enrollment rates near 30%, and employment rates above 82%. Schmidt & Hunter (1998) estimate that IQ 78 approaches average job training success rates for moderately complex occupations — skilled trades, technical work, supervisory roles. Research by Deary (2009, Intelligence: A Very Short Introduction) notes that IQ 78 predicts comfortable navigation of most consumer and civic literacy demands in modern developed societies. Gottfredson (1997) places IQ 78 at the threshold where managing most routine paperwork — tax forms, insurance claims, lease agreements — becomes independently feasible for most individuals.

Day-to-Day Life with an IQ of 78

A person at IQ 78 works as an auto body repair technician — assessing vehicle damage, estimating repair costs, performing complex bodywork, blending paint colors, and completing insurance paperwork. They have won their shop's employee of the month award twice. They own their home, manage finances confidently, and are raising two children. They help their children with homework through middle school. Reading at 10th–11th grade level covers all professional and personal needs. They have taken an online business course and are planning to open their own shop within 5 years. Social life is full and varied.

How Does an IQ of 78 Compare?

Here's how a score of 78 compares to nearby IQ scores:

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