Discusses an adaptive diagnostic test used as part of an instructional program in signed-number arithmetic on the PLATO system. Findings indicated that differences in prior and subsequent instructional methods affected the learning of more advanced materials and produced lower achievement scores on posttests. Thirty-two references are listed. (MER)

Describes a typical Group Decision Support System (GDSS) in use at the University of Mississippi and potential uses of a GDSS in seminars, interactive testing, lectures, foreign language study, and in communication with deaf or mute students. Benefits are noted, including increased participation, group synergy, and automated record keeping. (27…