Intelligence has been defined and studied under a number of different rubrics. Three individuals serve as a representative sample of the educational and psychological researchers associated with cognitive psychology who have made significant contributions to current understandings of intelligence. Robert Sternberg's theory contains subcategories of context, experience, and the cognitive components of information processing. Metacomponents, performance components, and knowledge acquisition components are proposed as general processes of intelligent behavior. Howard Gardner proposes a theory of multiple intelligences in which he claims there are seven relatively independent intelligences. John Horn, with his advisor Raymond B. Cattell, has developed a theory of intelligence that specifies broad factors of fluid abilities and crystallized abilities. All of these approaches recognize the importance of experience in intellectual ability. Phillip Ackerman and David Lohman are among the researchers integrating information processing theories of learning with theories of individual differences in abilities. Of great importance among the current issues in the assessment of intelligence is developing better measures of intellectual abilities. (Contains 12 references.) (SLD)