Abstract
ABSTRACTIn a study of the Making Choices social-emotional skills training program for children, generalized propensity scores (GPS) were used to estimate treatment effects by dosage. Dosage analyses provide information regarding the optimal amount of exposure to interventions. In addition to applying dosage analysis to an evaluation of the Making Choices program, this article reviews issues encountered during dosage analyses. It introduces GPS methods, a relatively recent development within the family of propensity score methods. Based on data from 267 3rd graders who participated in a trial of Making Choices, intervention effects varied significantly by dosage, with greater social competence demonstrated by children who had higher intervention exposure.
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