How IQ tests are conducted for kids, teens and adults? what are the different types of IQ tests? What are grades/marks to assess the level of intelligence?

This question is beyond my expertise. The only knowledge I have of IQ tests is that they are devised by psychologists to test people's capability for reasoning, cognitive development and general understanding of things according to their age. And accordingly, IQ is measured on a scale from 1-150. The tests contain questions according to people's age since it is believed that at a certain age a person can solve only particular types of questions and thus, he/she is supposed to have a certain level of intelligence. A person measuring 110 on the scale is considered fairly intelligent for his/her age. Some people question the credibility of these tests, though.   

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http://www.hoagiesgifted.org/why_test.htm

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The verbal and non verbal IQ tests used appropriately to measure  children academic ability. IQ tests are used by psychologists school or private, to determine what a child's cognitive functioning and intelligence are. The IQ tests used by most school psychologist are based on the child's ability to understand and use language. If a child with a disability has a serious language based disability such as dyslexia, the language based IQ test may not accurately reflect the child's intelligence.

"Non-Verbal IQ tests are designed to give a comprehensive, standardized assessment of general intelligence with entirely nonverbal administration and response formats."

Is the child with autism or a learning disability going to be given an IQ test by special education personnel but concerned that the IQ score may not be accurate due to the child's disability.

Because many special education personnel have such low expectations for children with disabilities, that a low IQ score gives them another reason, to not provide needed appropriate special academic service. The IQ score must be accurate, in order to determine what a child is academically capable of.

The Weschler Intelligence Scale is an IQ test that is often used by school psychologists to determine cognitive ability. This test not only provides excellent predictors of academic achievement but can also be used to determine the strengths and weaknesses of the child. But children with severe language based disabilities may have very low scores on the Weschlers.

Non-Verbal IQ tests are designed to give a comprehensive, standardized assessment of general intelligence with entirely nonverbal administration and response formats. Two tests that may be used are entitled: the Comprehensive Test of Nonverbal Intelligence (CTONI) or the Universal Nonverbal Intelligence Test (UNIT). The CTONI states that it is a language free intelligence test that requires no reading, writing, speaking or listening on the child's part. It is designed for children and adults, and can be given to individual children or in small groups in about minutes. The UNIT can be used on children from age5-age is nonverbal and response is done by8 hand or body gestures. There are three testing options available: Abbreviated, Standard, and Extended batteries. Can be used for deaf and hearing impaired students.

By understanding the difference between verbal and non verbal IQ tests you will be able to ask for the IQ test that will appropriately measure your child's academic ability. You should have high expectations for your child and push the school to also; this will help your child live a happy fulfilled life.

Hi, this question is very deep and requires a lot of information.

1. Different kind of IQ tests: Many types e.g. Mesna, Cattels, Weschler, Thurstome, Kaufman

2. IQ score is represented as a number. 98% of population scores between 70 and 130. The number and percentile of IQ tests are given here

For more details, I like this blog, It has a lot of detailed information: IQ test for kids

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