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How are they scored?
Home » Early Learning » IQ Tests » How are they scored?Posted by Your Guide on October 12, 2006 5:26 PM
You almost need to have an extremely high IQ to figure out how the tests are scored! Normalization is used when scoring IQ tests, making it impossible to score a test without first comparing it to another sample group. A score of 100 is always the mean IQ score, so other scores are interpreted relative to this number. Because the test scores are normalized, a Bell curve is created when it comes to scoring IQ tests, with a large portion of the population (about 52%) scoring between 89 and 111. The further you get from 100, on either side, the smaller the portion of scores. Accurate scores below 70 may suggest mental retardation of some kind, while accurate scores above 130 hint at intellectual giftedness.
Scores lower than 55 and higher than 145 have to be carefully scrutinized, because the sample size in those ranges is extremely small.
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