A normal IQ for an adult is generally considered to be between 85 and 115, with 100 being the average or mean IQ score. This range includes about 68% of the population and represents average intelligence relative to age peers
. More specifically:
- Scores from 90 to 109 are often classified as average or normal intelligence.
- Scores between 110 and 119 indicate above-average or superior intelligence.
- Scores above 130 are considered very superior or gifted.
- Scores below 70 are viewed as below average or potentially indicative of intellectual disability
IQ tests like the Wechsler Adult Intelligence Scale (WAIS) are designed to produce these standardized scores adjusted for age, so the "normal" range applies broadly to adults across different age groups
. In summary, an adult IQ around 100 is typical, with the normal range spanning roughly from 85 to 115.
