An experiment designed to determine the aptitude level(s) and group size which would provide optimal feedback for formative evaluation of instructional materials found that revisions based on feedback from one-to- one sessions with a mixed aptitude group were more effective than those based on feedback from a group or single aptitude level. (EAO)

Describes a project at Bell Laboratories which sought a compromise between ideal formative evaluation procedures and more feasible procedures necessitated by restrictions on time and resources. Local-trial and field-trial stages of a phased approach are discussed, as well as the benefits of field-tests. (EAO)

Describes the development of a retrieval system which used an interactive computer and an intelligent videodisc system to locate materials in the art school slide library. A survey of faculty, staff, and students indicated that user reaction was favorable, although image quality did arouse major concern. (MER)