High School

If 8-year-old Edie responds to the original Stanford-Binet with the proficiency of an average 10-year-old child, what intelligence quotient (IQ) would she record?

(Note: IQ is calculated as mental age divided by chronological age, multiplied by 100.)

Answer :

Final answer:

Edie's Intelligence Quotient (IQ), calculated according to the original Stanford-Binet IQ scale, is 125. The IQ was calculated using her mental age of 10 and her chronological age of 8.

Explanation:

The Intelligence Quotient (IQ) is calculated by the formula [Mental Age/Chronological Age] x 100. In Edie's case, she is 8 years old, but she responds with proficiency of an average 10-year-old child. Therefore, her IQ would be calculated as follows: [10/8] x 100 = 125. So, Edie's IQ is 125 according to the original Stanford-Binet IQ scale.

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