The Origins of Intelligence Testing

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Across
  1. 3. stated that "no two persons are born exactly alike; but each differs from the other in natural endowments..."
  2. 5. modified Binet's questions and established new age norms
  3. 6. English scientist with a fascination with measuring human traits; wondered if "natural ability" could be measured
  4. 9. the ratio of mental age to chronological age multiplied by 100
Down
  1. 1. proposed that nature selects traits through survival of the fittest
  2. 2. a measure of intelligence test performance; the chronological age that typically corresponds to a given level of performance
  3. 4. the widely used American revision of Binet's original intelligence test
  4. 7. developed the intelligence quotient, or IQ
  5. 8. collaborated with Simon to developed mental age