Individualizaron of instruction is often acclaimed as a desirable educational strategy, but the manner by which to implement this strategy has remained elusive. Part of the problem resides in the fact that individual differences among learners are complex and extremely diverse in nature. It is proposed that the most significant differences among people that are pervasive in learning situations are individual differences, or those that result from the interaction of unique biochemical and neurophysiological factors with each individual's unique socio historical background. The use of prototypic-learner models appears to give great promise for acknowledging these individual differences and for developing individualized instructional programs for typical classroom subject matter. THE FACT that individuals differ is seldom , disputed but typically ignored in psychological research as investigators continue their quest for general laws of learning. It is proposed here that this lack of attention for individual differences is especially pernicious in the conduct of meaning ful research in applied learning situations, given the assumption that the individual learner is, or should be, the ultimate concern in our educational settings. Differences among individuals in learn ing are therefore not to be conceived as solely due to dissimilarities in some unidimensional quality which reflects the efficiency of processing mech anisms, but rather they are to be considered as the result of various conditions of the learning situation interacting with idiosyncratic structures and mechanisms of the learner. (Learning in this discussion shall pertain to the acquisition and re tention of information or skills.) Most theories concerning instruction are satis fied if learning is enhanced in an overall sense with regard to group effects or interactions, with individual differences being ignored or partially cancelled out by means of experimental or statis tical controls. Variance which then occurs within these groups is generally attributed to experi mental error rather than, as the arguments in this paper will attempt to demonstrate, intrinsic indi vidual differences. The crux of the problem arises when some prac tical application to educational settings is at tempted, based upon the findings from basic research on learning variables. Most theories and discussions concerning instructions are con structed around the ideas, concepts, and experi mental findings available at that given point in time. Curriculum writers and teachers hold the not unreasonable expectation that these theories and discussions have some relevance for their own activities ; the expectation is that highly effective and theoretically sound sets of instructions can be generated, given the available evidence. This is a logical and recommended method of approach. The problem is, as a long history of these kinds of endeavors has clearly demonstrated, that this approach does not work very well. The instruc tions and methods generated from these theories and empirical data seem little or no better for the individual learner than whatever were used previously.
Read full abstract