Psychology I / Foundations of Intelligence
Practice question · Put in order

Order these figures by their historical contribution to measuring intelligence.

Hints
  1. The sensory-discrimination attempt came first and failed; the practical test came next.
  2. The ratio IQ formula was Terman's addition, built on Binet's mental-age idea.
Show the answer
  1. Galton measures reaction time and sensory acuity, believing them to index intellect
  2. Binet and Simon build a test to find schoolchildren needing extra help
  3. Wechsler abandons the ratio, scoring each person against their own age group
Why

Galton's sensory approach came first and failed, Binet and Simon then built the first practical test with mental age, and Terman turned it into the Stanford-Binet with the ratio IQ. Each step built on the previous one's concept.

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