Judith Zachai

Computer-Managed Instruction in the Navy: IV. The Effects of Test Item Format on Learning and Knowledge Retention.

Kathleen A Lockhart, Persis T Sturges, Nicholas H Van Matre, 1981 .

The Effects of the Timing of Feedback on Long-Term Knowledge Retention in PSI Courses.

Kathleen A Lockhart, Persis T Sturges, Judith Zachai, 1983 .