Questions › Define the concept of IQ? 0 Vote Up Vote Down admin asked 1 year ago 1 Answers 0 Vote Up Vote Down admin answered 1 year ago William Stern, a German psychologist, developed the notion of Intelligence Quotient in 1912. (I). The IQ is the ratio of a person's mental age to her/his chronological age. The ratio is multiplied by 100 to prevent fractions. IQ = MA / CA × 100 Please login or Register to submit your answer Username or Email Address Password Remember Me
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