John S. Carroll

John S. Carroll is a prominent figure in the field of cognitive psychology and is known for his work on intelligence and its measurement. He is best recognized for developing the "Carroll Hierarchical Model of Intelligence," which organizes cognitive abilities into a three-stratum framework, ranging from specific skills to general intelligence (g). This model has influenced how psychologists understand and assess human intelligence, highlighting the complexity and multifaceted nature of cognitive abilities. Carroll's research has significant implications for education, psychology, and the understanding of learning processes.