In this paper, we critically examine the way in which scholars have traditionally defined and problematized attrition. Through a series of examples of large-scale intervention impact studies, we share insights about the sources and consequences of attrition that expand our notion of how and why attrition occurs. We also discuss potential steps for…

Replication research is essential to scientific knowledge. Reviews of replication studies often electronically search for "replicat*" as a textword, which does not identify studies that replicate previous research but do not self-identify as such. We examined whether the 83 intervention studies published in six non-categorical research…

This meta-analysis provides an extensive and organized summary of intervention studies in education that are grounded in motivation theory. We identified 74 published and unpublished papers that experimentally manipulated an independent variable and measured an authentic educational outcome within an ecologically valid educational context. Our…

Evidence-based practices (EBPs) are instructional techniques that meet prescribed criteria related to the research design, quality, quantity, and effect size of supporting research, which have the potential to help bridge the research-to-practice gap and improve student outcomes. In this article, the authors (a) discuss the importance of clear…

Coburn and Turner (this issue) present an intriguing framework for understanding how data has come to be used in the current high accountability environments in education. In this framework, they connect various processes of data use within organizational and political contexts. Data use is presented using an ecological perspective that deepens…

This review examines the treatment integrity data of literacy interventions for students with emotional and/or behavioral disorders (EBD). Forty-four studies published between 1977 and 2005 were examined. Findings indicate that studies focusing on literacy interventions for students with EBD included clear operational definitions and data on…

Objectives: A national survey finds that 62% of social work programs do not require didactic and clinical supervision in any empirically supported psychotherapy (EST). The authors report the results of analysis of national survey data using two alternative classifications of EST to determine if the results are because of the definition of EST used…

Provides definitions of various types of studies used to measure the impact of interventions with children having speech, language, and hearing disorders. Describes studies initiated by the American Speech Language Hearing Association to evaluate various interventions. (DB)

The research needs in the epidemiology of child sexual abuse are discussed in terms of: a definition of epidemiology, the clash between the medical and legal cultures, statistical concerns, the relationship of social class or poverty with child sexual abuse, the need for cross-cultural research, intervention studies, studies of service…

This document presents the key principles underpinning effective evaluations as applied to policy initiatives in the field of lifelong learning (LL) and the various methods available to implement them. The following are among the topics discussed in Chapters 1-6: (1) the distinction between monitoring, modeling, and evaluation and considerations…