1. Ackerman, P. L. (1996). A theory of adult intellectual development: Personality, interests, and knowledge. Intelligence, 22, 227–257.
2. Ackerman, P. L. (2000). Domain-specific knowledge as the “dark matter” of adult intelligence: Gf/Gc, personality, and interests correlates. Journal of Gerontology: Psychological Sciences, 55B, 69–84.
3. Albert, D., & Steinberg, L. (2011). Age differences in strategic planning as indexed by the Tower of London. Child Development, XX, 1–17.
4. Anderson, L. W. (1985). Time and timing. In C. W. Fisher & D. C. Berliner (Eds.), Perspectives on instructional time (pp. 157–168). London: Longman.
5. Anderson, L. W., Krathwohl, D. R., Airasian, P. W., Cruikshank, K. A., Mayer, R. E., Pintrich, P. R., et al. (2001). A taxonomy for learning, teaching, and assessing: A revision of Bloom’s taxonomy of educational objectives. New York: Longman.