Examines the effects of pictures (screen captures and input devices) on documentation for older novice computer users (aged 26 to 69 years). Argues that screen captures help reduce memory load and support visual scanning for older users. Finds no support for the prediction that the presence of pictures would make some manuals more effective than…

This study examined the level of realism inherent in videotape and computer graphics display systems by comparing the ability of third graders, middle schoolers, and university students to estimate end states of visual transformations of spatial tasks. Their preferences for working with videotaped or computer-generated materials are also…

Reports on a continuing project to study children's use of the Science Library Catalog (SLC), a graphically based direct manipulation microcomputer interface for locating science materials in elementary school libraries. Search success on SLC, which uses HyperCard, is compared with a Boolean system; effects of age and gender are studied; and user…