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Adair, John G.; Sharpe, Donald – 1986
The Hawthorne and placebo effects in educational experiments were examined over a 20-year period, as reported in the ERIC, Dissertation Abstracts International, and Psych Info data bases. The literature searches identified 325 studies in education employing the relevant control procedures, and each study was coded for the type of placebo…
Descriptors: Control Groups, Educational Research, Expectation, Literature Reviews
Download full textOsterkamp, Marilynn B.; And Others – 1983
Although informal assessments of caregiver training and support groups have been positive, empirical evidence of their beneficial impact is needed. To evaluate a group program for families of elderly parents, a pre/postmeasure, experimental/control group design was implemented. Adults participating in two workshops on "Your Aging…
Descriptors: Adults, Aging Education, Aging (Individuals), Control Groups
