The use of singular methodologies has dominated emotional and behavioral disorder (EBD) intervention research, and by extension, the field has not deployed mixed-methods research (MMR). The purpose of this article is to provide an overview of MMR and demonstrate its utility for conducting EBD intervention research. The basic tenants and design…

Inherent in applied developmental sciences is the threat to validity and generalizability due to missing data as a result of participant drop-out. The current paper provides an overview of how attrition should be reported, which tests can examine the potential of bias due to attrition (e.g., t-tests, logistic regression, Little's MCAR test,…

Respondent attrition is a common problem in national longitudinal panel surveys. To make full use of the data, weights are provided to account for attrition. Weight adjustments are based on sampling design information and data from the base year; information from subsequent waves is typically not utilized. Alternative methods to address bias from…

Large-scale randomized studies provide the best means of evaluating practical, replicable approaches to improving educational outcomes. This article discusses the advantages, problems, and pitfalls of these evaluations, focusing on alternative methods of randomization, recruitment, ensuring high-quality implementation, dealing with attrition, and…

Identifying effective literacy interventions for teachers of very young children is important, but it is not easy. In this case study, we share our experiences implementing a quasi-experimental evaluation of an early literacy program. We describe the design and context of the study and discuss three key issues that we encountered with data…

Attrition of student affairs professionals is an issue of concern for the profession. This mixed methods study highlights reasons why participants left their student affairs careers. Seven general themes emerged from the study, including burnout, salary issues, career alternatives, work/family conflict, limited advancement, supervisor issues and…

This addendum to previously published results presents alternative analyses of data from large-scale effectiveness studies of Cognitive Tutor Algebra I in middle schools and high schools. These alternative analyses produce results that are substantively the same as previously reported. We find a significant positive effect of 0.21 standard…

Attrition among the agricultural education profession is concerning as approximately 50% of agriculture teachers leave within the first six years of teaching. Therefore, the purpose of the phenomenological study, conducted from an emic perspective, was to explore and describe secondary agriculture teachers' experiences related to remaining in the…

To effectively address teacher turnover, Teacher Incentive Fund (TIF) grantees need to follow an approach that entails aligning the tracking, diagnosing, and intervening processes. Unfortunately, too often retention strategies are implemented without regard to the various types of teacher turnover and specific data about the causes of turnover.…

Background: Those involved in school health education programs generally believe that health-education programs can play an important role in helping young people make positive health decisions. Thus, it is to document the effects of such programs through rigorous evaluations published in peer-reviewed journals. Methods: This paper helps the…

This technical paper examines the issue of attrition bias in two cohorts of the Longitudinal Surveys of Australian Youth (LSAY), based on an analysis using data from 1995 to 2002. Data up to 2002 provided eight years of information on members of the Y95 cohort and five years of information on members of the Y98 cohort. This study suggests that…

Interventions for a variety of emotional and behavioral problems are commonly delivered in the context of treatment groups, with many using rolling admission to sustain membership (i.e., admission, dropout, and discharge from group are perpetual and ongoing). The authors present an overview of the analytic challenges inherent in rolling group data…

Presents a method for the collection and analysis of collateral data about research subjects (i.e., measurements of events in subjects' lives that may affect outcome measures and/or lead to attrition). A six-step procedure evaluates bias resulting from subject attrition from a study using data from lost and retained subjects. (SLD)

In a study of the supply and demand of teachers, a state teacher workforce database was analyzed to determine why language teachers were leaving in downstate Illinois. Recommendations are offered for future attrition databases and analyses. (13 references) (Author/LB)

Attrition, or the loss of study subjects, confounds the subject identification process. Design attrition occurs when subjects initially involved in the study are excluded because of changes in study focus or rationale. Data collection attrition occurs when subjects are excluded because they were not contacted by the data gatherer, or because the…