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McNeil, Keith; Newman, Isadore – Mid-Western Educational Researcher, 1995
Presents situations in which researchers can use the general linear model to uncover reasons for discrepant effect-size results of meta-analysis of similar studies. Situations include similarly labeled treatments or participants differing in important ways, treatment effectiveness varying by subject aptitude or situational variables, research…
Descriptors: Effect Size, Hypothesis Testing, Meta Analysis, Research Methodology
Williams, John D.; Newman, Isadore – 1982
Problems associated with the analysis of data collected using the Solomon Four Group Design are discussed. The design includes an experimental group and a control group that have been pretested and posttested, and an experimental and a control group that have been posttested only. A sample problem is approached in three different ways. First, the…
Descriptors: Control Groups, Experimental Groups, Hypothesis Testing, Mathematical Models