text: A.R. Luria's empirical studies of modularity inspired the PASS theory of this concept, and John Carroll lent his three-stratum theory of it to a later collaboration with two other psychologists.
full_question: A.R. Luria's empirical studies of modularity inspired the PASS theory of this concept, and John Carroll lent his three-stratum theory of it to a later collaboration with two other psychologists. This concept is actually eight different, mostly independent ones, according to Howard Gardner. Raven's Progressive Matrices are often used in tests for Charles Spearman's "g-factor" on this concept. This phenomenon is constantly increasing according to the Flynn effect. External forces that influence this quality were discussed in the book The Bell Curve. A Stanford-Binet test commonly measures this quality. For 10 points, identify this quality that is measured as a "quotient."
first_sentence: A.R. Luria's empirical studies of modularity inspired the PASS theory of this concept, and John Carroll lent his three-stratum theory of it to a later collaboration with two other psychologists.
raw_answer: intelligence [or IQ or intelligence quotient until "quotient" is read]