John B Carroll | Vibepedia

John B. Carroll was a renowned American psychologist who, along with Raymond B. Cattell and John L. Horn, developed the Cattell-Horn-Carroll theory, a foundational framework for understanding human cognitive abilities. His work, spanning over 70 years, has significantly impacted the field of intelligence research. Carroll's Three Stratum theory, which integrates the psychometric approach and factor analysis, has been instrumental in shaping our understanding of human intelligence. His contributions have been recognized and built upon by prominent researchers like Robert Sternberg and Howard Gardner.