Computers were used to evaluate the effects of supplying answers to programmed instruction frames. A group experimental design compared passive reading, covert responding to frame blanks, and actively typing answers to blanks with and without immediate confirmation of correctness. Effects of a 315-frame program, teaching elements of programmed instruction design, were evaluated by analyzing answers to posttest generalization questions and an application test. Results strongly supported the effectiveness of requiring the student to supply fragments of a terminal repertoire while working through a program. Students who could either covertly respond to frame blanks or who were required to type frame answers performed significantly better on the frame generalization posttest and, more importantly, carefully followed program rules when preparing elements of a new instructional program.
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