Thurstone

This shifted the focus from "how smart are you?" to "how are you smart?"—a precursor to the modern understanding of cognitive profiles. Inventing the Scale: The Law of Comparative Judgment

Thurstone identified of intelligence:

Louis Leon Thurstone: The Architect of Modern Psychometrics While names like Freud or Skinner often dominate the conversation regarding 20th-century psychology, (1887–1955) stands as perhaps the most influential figure in how we actually measure the human mind. An engineer by training but a psychologist by trade, Thurstone transformed psychology from a field of observation into a rigorous, mathematical science. The Engineer of the Mind thurstone