Clinical prediction models are widely used in modern clinical practice. Such models are often developed using individual patient data (IPD) from a single study, but often there are IPD available from multiple studies. This allows using meta-analytical methods for developing prediction models, increasing power and precision. Different studies,…

Responds to the comments by D. McKay; B. D. Thombs, L. R. Jewett, and M. Bassel; M. D. Anestis, J. C. Anestis, and S. O. Lilienfeld; and W. W. Tryon and G. S. Tryon on the current author's original article, "The efficacy of psychodynamic psychotherapy." The academic psychology literature is filled with pronouncements about psychodynamic theory,…

In this article, three multilevel models for meta-analysis are examined. Hedges and Olkin suggested that effect sizes follow a noncentral "t" distribution and proposed several approximate methods. Raudenbush and Bryk further refined this model; however, this procedure is based on a normal approximation. In the current research literature, this…

This paper sets out the case for the manualization of sex offender treatment. The movement towards evidence-based practice in psychotherapy has led to strongly voiced opposing views on the value of manualization. However, "what works" evidence, i.e. the meta-analytical research behind the Risk-Needs-Responsivity model of offender rehabilitation,…

In this article, the authors present a multilevel (or hierarchical linear) model that illustrates issues in the application of the model to data from meta-analytic studies. In doing so, several issues are discussed that typically arise in the course of a meta-analysis. These include the presence of non-zero between-study variability, how multiple…

The first part of this paper examines using meta-analysis as a basis for making probabilistic statements about client outcome by revisiting Smith and Glass's (1977) classic paper concerning meta-analysis of psychotherapy outcome studies. While it may be argued that making probabilistic statements was not the primary purpose of meta-analysis, Smith…

Presents a two-pronged attempt to synthesize the research on stress coping: (1) a review of models and taxonomies of behaviors and resources related to stress coping and (2) a meta-analysis of recent experimental and quasi-experimental studies of stress coping. A taxonomy and a model of stress coping are offered, and implications for treatment are…

The structural model of positive and negative cognition derives from principles of information processing, intrapersonal communication, and cybernetic self-regulation. The model proposes five distinct states of mind quantitatively defined by the proportion of positive to total cognition. A positive dialogue with a set point proportion of .618 plus…