GROWTH DEVELOPMENT CHILD
MEASUREMENT OF INTELLIGENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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aptitude to his or her school performance
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mental age to his or her chronological age
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intelligence to his or her sibling’s intelligence
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intelligence to his or her parents’ intelligence
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Detailed explanation-1: -IQ was originally computed by taking the ratio of mental age to chronological (physical) age and multiplying by 100. Thus, if a 10-year-old child had a mental age of 12 (that is, performed on the test at the level of an average 12-year-old), the child was assigned an IQ of 12/10 × 100, or 120.
Detailed explanation-2: -The IQ of person is given by the formula, IQ=mc×100, where m is the mental age and c is the chromological age. If 80≤IQ≤140 for a group of 12-year children, find the range of their mental age.
Detailed explanation-3: -Publisher Summary. Intelligence quotient (IQ) can be obtained by the equation MA/CA=IQ, where MA is mental age and CA is chronological age. This chapter discusses the concepts of mental age and IQ, and the operations by which they are measured.
Detailed explanation-4: -Let’s say the individual being tested is 23 years old. The psychologist would first take the individual’s IQ score and divide it by the standard of 100 for a result of 1.2. Then the psychologist would multiply the answer by the person’s chronological age of 20 to get a mental age of 24.
Detailed explanation-5: -The German psychologist William Stern (1871-1938) introduced the idea of intelligence quotient, or IQ.