文档介绍：Psychological Bulletin Copyright 1995 by the American Psychologica;ical Association, IncI .
1995, Vol. 117, No. 3,450-468 0033-2909/95/$
Effects of Psychotherapy With Children and Adolescents Revisited:
A Meta-Analysis of Treatment e Studies
John R. Weisz Bahr Weiss
University of California, Los Angeles Vanderbilt University
Susan S. Han and Douglas A. Granger Todd Morton
University of California, Los Angeles University of North Carolina, Chapel Hill
A meta-analysis of child and adolescent psychotherapy e research tested previous findings
using a new sample of 150 e studies and weighted least squares methods. The overall mean
effect of therapy was positive and highly significant. Effects were more positive for behavioral than
for nonbehavioral treatments, and samples of adolescent girls showed better es than other
Age X Gender groups. Paraprofessionals produced larger overall treatment effects than professional
therapists or students, but professionals produced larger effects than paraprofessionals in treating
overcontrolled problems (., anxiety and depression). Results supported the specificity of treat-
ment effects: es were stronger for the particular problems targeted in treatment than for
problems not targeted. The findings shed new light on previous results and raise significant issues for
future study.
Over the past decade, applications of the technique known as Ayers, and Rodgers (1990) assembled a collection of studies
meta-analysis (see Cooper & Hedges, 1994; Mann, 1990; published between 1970 and 1988 focused on youth 4-18 years
Smith, Glass, & Miller, 1980) have enriched our understanding of age; mean effect sizes were for treatment versus no-treat-
of the impact of psychotherapy with children and adolescents parisons and for treatment versus active control
(herein referred to collectively as "children"). At least parisons. Combined, these three meta-analyses suggest that
general meta-analyse