Single-case design is a repeated-measures research approach for the study of the effect of an intervention, and its importance is increasingly being recognized in education and psychology. We propose a Bayesian approach for estimating intervention effects in SCD. A Bayesian inference does not rely on large sample theories and thus is particularly…

The scientific rigor of education research has improved dramatically since the year 2000. Much of the credit for this improvement is deserved by Institute of Education Sciences (IES) policies that helped create a demand for rigorous research; increased human capital capacity to carry out such work; provided funding for the work itself; and…

Using an RD design provides statistically robust estimates while allowing researchers a different causal estimation tool to be used in educational environments where an RCT may not be feasible. Results from External Evaluation of the i3 Scale-Up of Reading Recovery show that impact estimates were remarkably similar between a randomized control…

"A priori" power analyses allow researchers to estimate the number of participants needed to detect any effects of an intervention. However, power analyses are only as valid as the parameter estimates used. Effect sizes vary greatly depending on several study characteristics, including the nature of the intervention, the developer of the…

This paper puts forward a set of criteria for ensuring trustworthiness in design research studies undertaken by Higher Degree Research (HDR) students. Design research is aimed at exploring educational problems and refining theory and practice by defining a pedagogical outcome and is a methodological approach often associated with the Learning…

This document contains three papers concerned with prevention intervention research, a new area of depression research which has shown great promise for contributing new knowledge to the understanding of depression. The first paper, "Clinical Trials vs. Prevention Trials: Methodological Issues in Depression Research" (Ricardo F. Munoz), emphasizes…

A meta-analysis of 78 published studies, from 1966 to 1979, on test anxiety reduction in college students was concerned with: (1) to what extent did treatment methods differ in efficacy; (2) to what extent was rigor in experimentation associated with outcome; and (3) to what extent was inertia, as a characteristic of research, associated with…

Application of a common framework in studies of the development of social cognition can reduce conceptual and methodological ambiguities and enable clearer study of core issues. This paper describes the core issues and their attendant problems, outlines a model of information integration that addresses the issues, and describes some illustrative…

Since 1988 five evaluations of Federal demonstration programs in education have been implemented that had random-assignment designs to measure program impacts. The implementation of two of these evaluations, the evaluation of the School Dropout Demonstration Assistance Program and that of the Alternative Schools Random Assignment Program, are…

This paper discusses the integration of positivist single-subject design with interpretive, or naturalist, qualitative methods in the development of effective interventions for rural special education students. The resulting research/intervention design includes: (1) extending the normal baseline period from 3 to 10 days thus allowing the…

A persistent problem in aptitude-treatment interaction (ATI) research has been the need for a better conceptualization of instructional treatments. The concerns are important in the analysis of instructional treatments: the importance of considering the psychological processes called upon by the instructional treatment, and the ecological validity…

Five symposium papers evaluate the usefulness of ideas associated with the life-span view for enriching, highlighting, or expanding issues, theory, and research pertinent to change processes during infancy, childhood, adolescence, and adulthood, and for intervention programs during these periods. (Author/MP)

A repeated measures design was used to assess the effects of a methadone maintenance program in several California locations. Subjects were 720 Chicano and Anglo men and women participating in rehabilitation programs for heroin addicts. The subjects were interviewed between 1978-1981, and the average follow-up time after initial treatment was 4-6…

Relationships between change agent performance and outcome success within the context of group behavioral programs are identified. The evaluation of either the ultimate effectiveness, or the specific change processes in a group program often requires assessing the behavior of the change agents, as well as that of the target population. Five design…

In preparation for a major research study on change in schools, a 3-month pilot study of principals in 10 schools was conducted in central Texas. The main purpose of the study was to investigate different ways to document the actions taken by the principals to facilitate implementation of innovations in their schools. In this paper, the procedures…