Analysing your IQ
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Understand how age affects IQ scores. See developmental context for children and cognitive aging patterns for adults.
Adult (18+)
Standard IQ score (mean 100, SD 15)
IQ tests are standardized so that the average score is 100 at every age. When a child takes an IQ test, their raw score is compared to other children of the same age. This means a score of 115 for a 10-year-old represents the same relative ability as 115 for a 50-year-old.
Childhood (6-17): Cognitive abilities develop rapidly. IQ scores can change significantly during this period based on education, environment, and stimulation.
Young Adulthood (18-25): Peak of fluid intelligence. Processing speed and working memory are at their highest.
Middle Age (26-55): Fluid intelligence gradually declines, but crystallized intelligence (knowledge and vocabulary) continues to grow. Experience often compensates for speed.
Later Adulthood (55+): Processing speed declines more noticeably, but wisdom, expertise, and crystallized knowledge remain valuable assets.
A score of 100 is average at any age. Above 115 is considered above average, and above 130 is gifted range.
Fluid intelligence (processing speed) does decline, but crystallized intelligence (knowledge) often increases. Overall IQ remains relatively stable.
Yes, childhood IQ can be influenced by education, cognitive stimulation, nutrition, and environment. The brain is more plastic during development.