After a brief review of the contributions of factor analysis and regional analysis to the elaboration of the structures of spatial abilities, a facet design and regional model for spatial abilities are presented. A cylindrical-wedge model is proposed to represent the correlational structure of spatial ability tests. (SLD)

Voluntary Visual Attention concerns "natural" viewing behavior or visual browsing when the subject is under no constraints regarding the distribution of attention. A general overview of this area of psychological investigation is presented. (Author/JKS)

A battery of Graphic Information Processing Tests (GRIP) was developed to utilize the display characteristics of computer terminals in measuring abilities important for processing visually presented information. The tests were found to be useful for measuring short-term memory and sequential reasoning abilities. (Author/RC)

The feasibility of modeling performance on a three-dimensional rotation task within the context of item response theory was examined using 160 high school students. Eighty pairs of three-dimensional Shepard-Metzler figures were used. This approach to psychometric modeling, incorporating research results from cognitive science, appears workable.…