1. Ackerman, P. L. (1987). Individual differences in skill learning: An integration of psychometric and information processing perspectives Psychological Bulletin, 102, 3–27.
2. Ackerman, P. L. (1988). Determinants of individual differences during skill acquisition: Cognitive abilities and information processing. Journal of Experimental Psychology: General, 117, 288–318.
3. Anderson, J. R. (1982). Acquisition of cognitive skills. Psychological Review, 89, 369–406.
4. Anderson, J. R. (1990). Cognitive psychology and its implications. New York: Freeman.
5. Applbaum, M. J. (1961). A special guidance program for gifted underachievers of the tenth grade. The Bulletin, 45, 20–33.