ABSTRACT
The Iines of classification dividing this volume from the one that precedes and the one that follows in the Handbook series are somewhat arbitrary, but nonetheless reflect at least an element of rationality. Overall, the sequence from Volume 2 through Volume 6 exhibits a trend from treatments of learning and motivation to treatments of memory, from concern with the adjustment of the whole organism in its environment to concern with progressively more abstract aspects of cognitive organization and function. In this volume, we shall deal primarily with conditions of acquisition, retention, and forgetting, and the manner in which acquired information and motivation combine to determine performance.
