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Canelos, James – 1982
The primary research problem confronting many experimental researchers is finding valid stimulus (instructional) and criterial (testing) materials that operationally fit their hypotheses. Five experimental studies have been completed, and two are in progress, using the Dwyer instructional materials to address the problem of finding valid…
Descriptors: Audiovisual Aids, Educational Research, Instructional Materials, Research Design
Dwyer, Francis M. – 1976
During 12 years of investigation, data were obtained from 2,500 high school students and 10,000 college students concerning the effect of specific types of visualizations in producing optimum levels of achievement. The studies considered such qualities of illustrations as: realism, color, relation to oral presentations, relation to educational…
Descriptors: Achievement Gains, Audiovisual Aids, College Students, Educational Objectives
