Experiments versus quasi-experiments: do they yield the same answer?
作者信息
Shadish W R, Heinsman D T
机构信息
Department of Psychology Memphis State University, TN 38152, USA.
出版信息
NIDA Res Monogr. 1997;170:147-64.
PMID:9154256
Abstract
摘要
Shadish W R, Heinsman D T
Department of Psychology Memphis State University, TN 38152, USA.
NIDA Res Monogr. 1997;170:147-64.
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