TY - JOUR A1 - Haygood, R. C. A1 - Bourne, Jr. L. E. T1 - Attribute- and Rule-learning Aspects of Conceptual Behavior JF - Warson, P. C., Johnson-Laird, P. N. (Eds.): Thinking and Reasoning, Harmondsworth (Penguin Books) 1968, pp. 234-259. Y1 - 1968 ER -