Lewis Thurstone

L. L. Thurstone was a psychologist who advanced the understanding of intelligence measurement and psychological testing. He believed that intelligence isn't just one single ability but is made up of multiple distinct factors. Thurstone developed statistical methods to identify these different mental abilities, such as verbal reasoning, numerical skills, and spatial awareness. His work helped refine how psychologists assess and understand human intelligence, emphasizing that people have a variety of strengths rather than just a single overall score. In essence, Thurstone's contributions helped us better understand the complexity of human mental capabilities.