Being

Ackerman, P. L. (1996). A theory of adult intellectual development: Process, personality, interests, and knowledge. Intelligence, 22, 229-259. Ackerman, P. L. (2008). Knowledge and cognitive aging. In F. I. M. Craik & T. A. Salthouse (Eds.), The handbook of aging and cognition (3rd ed., pp. 445-489). New York, NY: Psychology Press. Beier, M. E., & Ackerman, P. L. (2005). Age, ability and the role of prior knowledge on the acquisition of new domain knowledge. Psychology and Aging, 20, 341-355. doi: 10.1037/0882-7974.20.2.34] Carroll, J. B. (1993). Human cognitive abilities: A survey of factor-analytic studies. New York, NY: Cambridge University Press. Hertzog, C., Kramer, A. FE, Wilson, R. S., & Lindenberger, U. (2008). Enrichment effects on adult cognitive development: Can the functional capacity of older adults be preserved and enhanced? Psychological Science in the Public Interest, 9, 1-65. Horn, J. L., & Cattell, R. B. (1966). Refinement and test of the theory of fluid and crystallized general intelligences. Journal of Educational Psychology, 57, 253-270. doi: 10.1037/h0023816 Schaie, K. W. (2005). Developmental influence on adult intelligence: The Seattle Longitudinal Study. New York, NY: Oxford University Press. Spearman, C. (1927). The nature of “intelligence” and the principles of cognition. New York, NY: Macmillan. Sternberg, R. J., & Jordan, J. (2005). A handbook of wisdom: Psychological perspectives. New York, NY: Cambridge University Press.