Helen Keller was blind and deaf but grew up to be an intelligent, educated and successful adult. Applying Galton's approach to intelligence testing, an adult Helen Keller would most likely be classified as ________while Binet's test would most likely rate her as ________.

Question

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Galton's approach to intelligence testing focused on sensory abilities, particularly sight, so he would have classified Helen Keller as subnormal. However, Binet's test measures a variety of mental abilities beyond sensory perception, and therefore would likely rate her as average or above average in intelligence.

Helen Keller Was Blind and Deaf but Grew Up to Be