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Haenn, Joseph F.; And Others – 1976
The subject mortality problems of an experimental design which covers the period of student recruitment through posttesting over a 13-month period, is detailed in this study. Out of an effective applicant pool of 72 students randomly assigned to experimental and control groups, only 38 students remained at the end of the study with complete test…
Descriptors: Attrition (Research Studies), Career Education, Control Groups, Dropouts
White, Owen R. – 1978
Traditionally, the use of control groups, regression discontinuity/projection, or norm referenced models has been advocated for educational program evaluation. The small numbers of and the heterogeneous characteristics of severely and profoundly handicapped make these evaluation methods inappropriate for this population subgroup. Furthermore, no…
Descriptors: Case Studies, Control Groups, Elementary Secondary Education, Evaluation Methods
Thompson, Nancy A.; Marx, Thomas F. – 1973
As a continuation of previous research, this project was designed to test the efficacy of a multi-media individualized program in Spanish. Spanish 2 students were divided into three groups, two experimental and one control group. One experimental group utilized the individualized approach in Spanish 1 and Spanish 2. The other studied traditional…
Descriptors: Control Groups, Diagnostic Tests, Experimental Groups, Individualized Instruction