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Cook, Bryan G.; Dupuis, Danielle N.; Jitendra, Asha K. – Journal of Learning Disabilities, 2017
When classifying the evidence base of practices, special education scholars typically appraise study quality to identify and exclude from consideration in their reviews unacceptable-quality studies that are likely biased and might bias review findings if included. However, study quality appraisals used in the process of identifying evidence-based…
Descriptors: Investigations, Evidence Based Practice, Experimental Programs, Special Education
Dwyer, Francis M. – 1982
The program of systematic evaluation of variables associated with visual learning was initiated in 1965 to investigate the impact of variables linked to effective, efficient use of instructional visual materials. A prototype experimental package, containing a specific unit of cognitive content, learner achievement objectives, four individual…
Descriptors: Data Collection, Experimental Programs, Instructional Materials, Media Research