When it comes to intelligence testing and psychological statistics, Charles Spearman is a name that can’t be ignored. His work shaped the way we think about intelligence, paving the way for modern cognitive assessment tools, standardized testing, and even IQ evaluations. If you’ve ever taken an IQ test or heard of “general intelligence,” you…
When you hear the word IQ test, chances are that somewhere in the background of that conversation is David Wechsler, a name that might not sound as mainstream as Freud or Pavlov but is just as important in psychology. This Romanian-American psychologist didn’t just create tests—he completely redefined how we measure intelligence, making his…
Théodore Simon might not be a household name, but if you’ve ever taken an IQ test, you’ve got him (and his mentor Alfred Binet) to thank—or blame, depending on how you feel about standardized testing. Simon played a key role in developing one of the most influential intelligence tests in history, the Binet-Simon Intelligence…
