John L. Horn

John L. Horn was a renowned psychologist known for his work on intelligence and cognitive abilities. He developed influential theories about how different mental skills, such as reasoning and memory, are related yet distinct, emphasizing that intelligence is multifaceted. Horn contributed to understanding how these abilities develop over time and how they can be measured. His research helped shape modern assessments of intelligence, highlighting that intelligence isn't just a single score but composed of various skills that can change with age and experience.