What system was used in early intelligence tests to compute an IQ?

Question

Quizplus · Accepted Answer

In early intelligence tests, the IQ was computed by dividing the mental age by the chronological age, hence option C is the correct choice. This method was used in the Stanford-Binet Intelligence Scale, which was one of the first intelligence tests. Option A is incorrect because comparing scores to group norms is a method used to determine percentile rank. Option B is incorrect as dividing chronological age by mental age would result in a fraction, not an IQ score. Option D is incorrect because translating a score into standard deviations is a method used to create a bell curve and determine the distribution of scores, not to compute an IQ score.

What System Was Used in Early Intelligence Tests to Compute