Deutsch: Abweichungs-IQ / Español: CI de desviación / Português: QI de desvio / Français: QI de déviation / Italiano: QI di deviazione /
Deviation IQ refers to an IQ obtained statistically from a person's relative standing in his or her age group, that is, how far above or below average the person's score was relative to other scores. Deviation IQ is a method of constructing IQ scores that compares a child's performance to that of other children the same age; contrast with mental age.
Moreover, Deviation IQ is an index of intelligence derived from comparing the individual's score on an intelligence test with the mean score for that individual's reference group.
Deviation IQ is a concept introduced by Wechsler to address problems observed when applying the ratio IQ to older individuals. An individual's performance on an IQ test is compared to that of her or his age peers.
Description
Deviation IQ is a type of IQ score that is calculated by comparing an individual's score on an intelligence test to the average score for their age group. This type of IQ score is based on the normal distribution curve, with the average IQ set at 100 and a standard deviation of 15 points. A deviation IQ score indicates how far above or below the average a person's intelligence level falls. It provides a more precise measure of an individual's intelligence compared to a traditional IQ score. Deviation IQ scores are often used in psychological assessments and research studies to evaluate cognitive abilities.
Application Areas
- Educational settings for identifying students who may need special assistance or advanced placement
- Clinical psychology to assess cognitive functioning in individuals with intellectual disabilities or other neurological conditions
- Research studies to measure the impact of various factors on intelligence levels
Treatment and Risks
- There are no specific treatments for deviation IQ itself, as it is a measure of intelligence rather than a condition.
- Risks associated with deviation IQ may include misinterpretation of scores leading to incorrect assumptions about an individual's abilities or potential.
Examples
- An individual with a deviation IQ of 130 would be considered gifted, as they are two standard deviations above the average IQ of 100.
- Someone with a deviation IQ of 70 may be considered to have an intellectual disability, as they are two standard deviations below the average IQ.
Summary
Deviation IQ is a more precise measure of intelligence that compares an individual's IQ score to the average score for their age group. It is based on the normal distribution curve with a mean of 100 and a standard deviation of 15 points. Deviation IQ scores are commonly used in psychological assessments and research to evaluate cognitive abilities.
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