This chapter reviews the historical and current trends in the study of therapist effects. We
discuss statistical methods for investigating therapist effects, with a primary focus and …

Multilevel modeling (MLM) is rapidly becoming the standard method of analyzing nested
data, for example, data from students within multiple schools, data on multiple clients seen …

Noted for its comprehensive coverage, this greatly expanded new edition now covers the
use of univariate and multivariate effect sizes. Many measures and estimators are reviewed …

Designing Experiments and Analyzing Data: A Model Comparison Perspective (3rd edition)
offers an integrative conceptual framework for understanding experimental design and data …

One common obstacle to the audience's embracing the persuader's advocated action or
viewpoint is the audience's current attitudes, that is, the audience's general evaluations (of …

Although the therapeutic alliance is a consistent predictor of psychotherapy outcomes,
research has not distinguished between the roles of patient and therapist variability in the …

Objective: A randomized cluster controlled trial tested the hypothesis that weekly feedback to
clinicians would improve the effectiveness of home-based mental health treatment received …

To estimate the variability in outcomes attributable to therapists in clinical practice, the
authors analyzed the outcomes of 6,146 patients seen by approximately 581 therapists in …

Data for completer and intent-to-treat samples from the two psychotherapy conditions of the
National Institute of Mental Health Treatment of Depression Collaborative Research …

Evidence suggests that a moderate amount of variance in patient outcomes is attributable to
therapist differences. However, explained variance estimates vary widely, perhaps because …