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Color2
Elementary Secondary Education2
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Journal of Learning…2
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Parker, Randall M.1
Solan, Harold A.1
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An Appraisal of the Irlen Technique of Correcting Reading Disorders Using Tinted Overlays and Tinted Lenses.
Peer reviewed Peer reviewed
Solan, Harold A. – Journal of Learning Disabilities, 1990
The article reviews three studies (EC 600 064-066) evaluating the effectiveness of using Irlen tinted lenses or overlays with reading-disabled persons. It is concluded that carefully designed and controlled studies do not currently lend support to the Irlen hypothesis. (DB)
Descriptors: Color, Elementary Secondary Education, Eyes, Intervention
Power, Control, and Validity in Research.
Peer reviewed Peer reviewed
Parker, Randall M. – Journal of Learning Disabilities, 1990
The article examines the concepts of power and control in research design and applies them to a review of the validity of three studies (EC 600 064-066) evaluating the effectiveness of using Irlen tinted lenses with reading-disabled persons. Internal validity, external validity, statistical conclusion validity, and construct validity are…
Descriptors: Color, Data Interpretation, Elementary Secondary Education, Evaluation Research