Alfred Binet's insight regarding a method of measuring achievement had an international impact in the twentieth century. What was the original purpose of his test and how did he quantify (measure) achievement?
What scoring system did later researchers base on Binet's method, and how was it originally calculated?
What will be an ideal response?
Answer: A good answer will include the following key points.
? The purpose of Binet's test was to determine which children were slow learners so that they could be given remedial work and brought up to the average.
? A child's score on the test allowed him to calculate the child's mental age (i.e., the average age associated with that score) and compare it to the child's chronological age.
? Later researchers used Binet's concept of mental age to calculate an intelligence quotient (IQ) score for individuals.
? Originally, IQs were calculated by dividing a child's mental age by his or her chronological age and then multiplying by 100.
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What will be an ideal response?