ERIC Number: EJ432257
Record Type: Journal
Publication Date: 1991
Reference Count: N/A
How John Henry Effects Confound the Measurement of Self-Esteem in Primary Prevention Programs for Drug Abuse in Middle Schools.
Barrett, Allen C.; White, Doris A.
Journal of Alcohol and Drug Education, v36 n3 p87-102 Spr 1991
Evaluated statistical primary prevention drug abuse program for middle school students. Control group outperformed experimental group on self-esteem dimension. Results indicated existence of John Henry Effect as confounding explanation of self-esteem outcome. Suggests that measurement of factors such as self-esteem be conducted in settings where control group has not had contact with, or knowledge of treatment group program. (Author/NB)
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A