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Intelligence testing
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Psychological testing includes a wide variety of types of testing. One of the most common tests used by psychologists are measures of cognition also known as intelligence measures.
There are several types of measures of cognitive functioning available. The selection of the test instrument will depend on:
- the age of the person being evaluated
- their ability to communicate fluidly in English
- whether they are suspected of being intellectually deficient
- whether they are suspected of being intellectually gifted
- other issues that might need to be addressed
Single instrument testing is commonly done for assessing intellect only. Some parents want this information to know if their children are in an appropriate academic placement and their school district doesn't offer any Wechsler measures of intellect due to court cases. Other people want this information for documentation for specialized services such as Department of Rehabilitation, Regional Center, Social Security Disability, or specialized organizations such as Mensa.
It's possible to start assessing intellect in babies using the Bayley Scales of Infant and Toddler Development. This provides a measure of cognition, language and motor skills. The test goes to 42 months.
At the age of 2 years and 6 months, the Wechsler Preschool and Primary Scales of Intelligence can be used. This has both verbal and nonverbal scales and goes up to age 7. Older children ages 6-16 years 11 months can use the Wechsler Intelligence Scale for Children and adults age 16-89 can use the Wechsler Intelligence Scale for Adults.
For individuals suspected of intellectual deficiency, the Leiter International Performance scale can be used. This is a non-veerbal measure that can provide measures of intellect down to an IQ of 36. IQ scores have an average of 100.
For individuals suspected of mental giftedness, the Stanford Binet is the best instrument because it has extended norms for gifted populations allowing evaluation of IQ scores in excess of 200.
Additional tests for measuring intellect include the Woodcock Johnson Tests of Cognition, The Raven Progressive Matrixes Test, the Test of Nonverbal Intelligence, The Comprehensive Test of Nonverbal Intelligence, the Unified Nonverbal Intelligence test, The Wechsler Intelligence Scales for Children, The Wechsler Intelligence Scales for adults and the Kaufman Adolescent and Adult Intelligence Test. There may be additioonal tests on the market but these are the most commonly used measures.
If you are interested in an evaluation, feel free to contact our office.
Categories: General Psychology
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