Historically, IQ was a score obtained by dividing a person’s mental age score, obtained by administering an intelligence test, by the person’s chronological age, both expressed in terms of years and months. The resulting fraction (quotient) was multiplied by 100 to obtain the IQ score.
Q. Who is the psychologist that used a trial and error approach to psychological measurement?
| Edward Thorndike | |
|---|---|
| Died | August 9, 1949 (aged 74) Montrose, New York, United States |
| Nationality | American |
| Education | Wesleyan University (B.S.) Harvard University (M.A.) Columbia University (Ph.D.) |
| Occupation | Psychologist |
Q. Who is the psychologist that linked intelligence and school success?
Alfred Binet
For the purpose of this test, we define Mental Age as a measure of a person’s psychological abilities in comparison to the number of years it takes for an average child to reach the same level. For example, if your mental age is 10, regardless of your actual chronological age, you are mentally similar to a 10-year-old.
Q. Why is IQ called a quotient?
Q. Which of the following is the most commonest type of mental retardation?
Fragile X syndrome is the most common inherited form of mental retardation and, after Down syndrome, the most common genetic form.
Q. How early can mental retardation be diagnosed?
When is the diagnosis made? The onset of mental retardation is in childhood, before 18 years of age. The diagnosis is generally made after infancy, between the preschool and school-age periods. Sometimes the diagnosis may be made later, at the time when a thorough assessment is performed.
Q. Which of the following is an example of an intellectual disability?
Down syndrome and fragile X syndrome are examples of syndromic intellectual disabilities. Intellectual disability affects about 2 to 3% of the general population. Seventy-five to ninety percent of the affected people have mild intellectual disability.
Q. How does intellectual disability affect cognitive development?
Intellectual disability (used to be Cognitive Disability) is a term used when a person has certain limitations in mental functioning and in skills such as communicating, taking care of themselves-, and social skills. These limitations will cause a child to learn and develop more slowly than a typical child.
