Describes the final investigation of a sequential series of studies to determine whether videodisc technology is educationally effective and cost efficient. The study compared training time, posttest success, student stress, and student satisfaction in U.S. Army paramedic students in a nonvideodisc control group and limited-access and full-access…

This meta-analysis of 49 comparative studies shows that mastery testing has positive effects on student learning, but the size of effect depends on the stringency of the criterion used and the degree of experimental control. The effects of instructional time, student attitudes, and differences in ability levels are also addressed. (Author/LRW)

Describes a study that compared individual computer-assisted instruction (CAI) with paired/cooperative CAI as a method of providing inservice training for cooperative extension agents on the topic of proper water well location and construction. Cognitive achievement and time spent on the lesson are investigated. (18 references) (LRW)