Who would have been most enthusiastic about the value of a single intelligence test score as an index of an individual's mental capacities?

The significance of a single intellectual ability test result as a measure of an individuals personal intellectual capabilities would have piqued Charles spearman's interest.

Charles spearman goal was to devise a way for constructing an index based on a single exam to evaluate or evaluate mental abilities.

Charles spearman is the perfect solution.

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The correct answer would be - spearman.

Explanation:

Charles Spearman presented the two factor theory of the intelligence. He developed a mechanism or method that was based on the analyzing factors, and testing variables to develop statistical correlation in between related variables that are tested.

His idea was to develop a method to make an index by a single test to measure or evaluate the mental capacities so the most enthusiastic person would be Spearman.

Thus, the correct answer is - spearman.

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