Reviews evidence which suggests that there may be little or no direct introspective access to higher order cognitive processes. Ss are sometimes unaware of the existence of a stimulus that importantly influenced a response, unaware of the existence of the response, and unaware that the stimulus has affected the response. It is proposed that when people attempt to report on their cognitive processes, that is, on the processes mediating the effects of a stimulus on a response, they do not do (...) so on the basis of any true introspection. Instead, their reports are based on a priori, implicit causal theories, or judgments about the extent to which a particular stimulus is a plausible cause of a given response. This suggests that though people may not be able to observe directly their cognitive processes, they will sometimes be able to report accurately about them. Accurate reports will occur when influential stimuli are salient and are plausible causes of the responses they produce, and will not occur when stimuli are not salient or are not plausible causes. (shrink)

In this remarkably wide-ranging book Professor Lowenthal analyses the ever-changing role of the past in shaping our lives. A heritage at once nurturing and burdensome, the past allows us to make sense of the present whilst imposing powerful constraints upon the way that present develops. Some aspects of the past are celebrated, others expunged, as each generation reshapes its legacy in line with current needs. Drawing on all the arts, the humanities and the social sciences, the author uses sources as (...) diverse as science fiction and psychoanalysis to examine how rebellion against inherited tradition has given rise to the modern cult of preservation and pervasive nostalgia. Profusely illustrated, The Past is a Foreign Country shows that although the past has ceased to be a sanction for inherited power or privilege, as a focus of personal and national identity and as a bulwark against massive and distressing change it remains as potent a force as ever in human affairs. (shrink)

The representation of physics problems in relation to the organization of physics knowledge is investigated in experts and novices. Four experiments examine the existence of problem categories as a basis for representation; differences in the categories used by experts and novices; differences in the knowledge associated with the categories; and features in the problems that contribute to problem categorization and representation. Results from sorting tasks and protocols reveal that experts and novices begin their problem representations with specifiably different problem categories, (...) and completion of the representations depends on the knowledge associated with the categories. For, the experts initially abstract physics principles to approach and solve a problem representation, whereas novices base their representation and approaches on the problem's literal features. (shrink)