EDUCATION UGC NET
SCHOOL AND CLASSROOM MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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140
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120
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100
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90
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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: -Hence, the required mental age for a group of 12-year children is 9.6 years or more and 16.8 years or less. where MA is mental age and CA is chronological age.
Detailed explanation-3: -a numerical scale unit derived by dividing an individual’s results in an intelligence test by the average score for other people of the same age. Thus, a 4-year-old child who scored 150 on an IQ test would have a mental age of 6 (the age-appropriate average score is 100; therefore, MA = (150/100) × 4 = 6).
Detailed explanation-4: -Hence, we conclude that child’s IQ would be 125.
Detailed explanation-5: -Hence, we can conclude that the IQ of a 25-year-old boy whose mental age is 16 will be 64.