AP PSYCHOLOGY

Detailed explanation-1: -Cattell and Francis Galton shared an interest in individual differences and Galton provided him with a scientific goal-the measurement of the psychological differences between people.-Under Galton’s influence, Cattell became one of the first American psychologists to stress quantification, ranking, and ratings.

Detailed explanation-2: -Raymond Cattell was an influential psychologist who developed new analytic techniques that allowed for more nuanced empirical measurements of the components of personality and intelligence.

Detailed explanation-3: -Personality and Learning Theory, 2 vol. (1979–80), is considered Cattell’s most important work. In it he proposed a theory of human development that integrates the intellectual, temperamental, and dynamic aspects of personality in the context of environmental and cultural influences.

Detailed explanation-4: -The Cattell–Horn–Carroll theory is an integration of two previously established theoretical models of intelligence: the theory of fluid and crystallized intelligence (Gf-Gc) (Cattell, 1941; Horn 1965), and Carroll’s three-stratum theory (1993), a hierarchical, three-stratum model of intelligence.

Detailed explanation-5: -Fluid–Crystallized (Gf-Gc) Theory Cattell believed that Fluid Intelligence (Gf) included inductive and deductive reasoning abilities that were influenced by biological and neurological factors as well as incidental learning through interaction with the environment.