Kinsbourne's attentional model of hemisphere differences is reviewed, and some difficulties inherent in this model are described. Although others have succeeded in identifying some factors that govern effects of selective activation, effects of general activation are uncertain, so the overall outcome of concurrent memory loading is still difficult…

This article reviews two experiments on the mapping and planning of actual (campus buildings) and hypothetical (ideal town facilities) items in a two-dimensional space. Direct mapping (planning) techniques are preferred over the method of pair comparisons, especially for the actual environment. (See TM 504 879-880) (Author/CTM)

Research on memory performance in children, the elderly, and individuals under stress is integrated with research on memory performance in college students. Assumptions include: (1) variation in attentional capacity within and between individuals, and (2) encoding operations vary in attentional requirements. Most of the data support the framework.…