Likewise, if your scored 67 (an “average” iq), this means you were 11 points below the person mean Read more: The Flynn effect IQ range For example, if you receive a score of 110 (a “superior” iq), this means your iq score was 10 points higher than the average person’s in that particular test sample. The highest score possible is 145, and the lowest score possible is 61 scores between these two extremes represents just one standard deviation from the mean iq for that group. Most iq tests score an individual on a scale of 100. Binet devised a set of tests to help identify children with learning difficulties and was an early proponent for child-centered education. However, there are large variations in intelligence scores even within each age group and between different groups of people within a given age group.Īlfred Binet, the French psychologist who developed the first test of intelligence in 1905. By age 24, the average score had increased to 112 points. A 2006 study of nationally representative data found that the average IQ score for children aged 8 to 14 years was 106 points. There is an IQ range increase by age, but the average intelligence quotient (IQ) score remains relatively consistent over time. 9.2.1 Footnotes IQ range increase by age.
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