1. Skill acquisition: Compiling weak method problem solutions;Anderson;Psychological Review,1987
2. Ad hoc categories;Barsalou;Memory and Cognition,1983
3. Cognition and adaptation: The importance of learning to learn;Bransford,1981
4. Learning, remembering and understanding;Brown,1983
5. The development of subitizing in preschool and early elementary school children;Campbell,1988