Richard A. Cattell

Richard A. Cattell was a prominent psychologist known for his work in personality theory and psychological testing. He developed methods to measure individual differences in personality traits, emphasizing that personality is composed of core traits that influence behavior. Cattell created tools like the 16 Personality Factor Questionnaire (16PF), which assesses a range of characteristic features that make each person unique. His research contributed significantly to understanding how personality traits develop and how they can be reliably measured, aiding fields like clinical psychology, occupational selection, and personal development.