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Peer reviewed Peer reviewed
ERIC Number: EJ420794
Record Type: Journal
Publication Date: 1990
Pages: N/A
Abstractor: N/A
ISBN: N/A
ISSN: ISSN-0022-0973
EISSN: N/A
Available Date: N/A
The Placebo Control Group: An Analysis of Its Effectiveness in Educational Research.
Adair, John G.; And Others
Journal of Experimental Education, v59 n1 p67-86 Fall 1990
A review and meta-analysis were made of placebo control groups in educational experiments. In all, 125 studies were clustered into procedures that included (1) explicit manipulation of attentional elements; (2) explicit description of the placebo activity plus implied reference to attention; and (3) exclusive reference to the activity. (SLD)
Descriptors: Attention, Control Groups, Educational Research, Effect Size, Experimental Groups, Meta Analysis, Research Design, Research Reports, Sampling
Publication Type: Journal Articles; Information Analyses; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A