This article develops new closed-form variance expressions for power analyses for commonly used difference-in-differences (DID) and comparative interrupted time series (CITS) panel data estimators. The main contribution is to incorporate variation in treatment timing into the analysis. The power formulas also account for other key design features…

This article explores how temporality and temporal regimes might be engaged in qualitative research in the sociology of education, proposing that such questions matter in relation to how research is done, not only to the topics and themes researched. The article shows how temporality enters into research designs, practices and imaginaries, arguing…

This paper concerns the identification of teaching strategies that enhance the development of 4th grade students' experimental design skills at a public primary school in Argentina. Students' performance in the design of relevant experiments was evaluated before and after an eight-week intervention compared to a control group, as well as the…

Latent state-trait (LST) analysis is frequently applied in psychological research to determine the degree to which observed scores reflect stable person-specific effects, effects of situations and/or person-situation interactions, and random measurement error. Most LST applications use multiple repeatedly measured observed variables as indicators…

In an ex post facto causal-comparative research design, this study investigated the effectiveness of Automated Writing Evaluation (AWE) programs on raising the student writing achievement. Tennessee Comprehensive Assessment Program (TCAP) writing achievement scores from the 2010 administration were utilized for this study. The independent variable…

This article reviews 44 refereed journal articles published between 2003 and 2008. All of the articles attempt to directly uncover the experiences or perspectives of young people cared for by the state in foster, residential or kinship care homes. The review reveals that this field is developing a rich body of evidence derived from a broad range…

The problem of choosing the most efficient design (longitudinal, mixed longitudinal, or cross-sectional) to estimate polynomial parameters for time-structured data in educational and psychological research is considered. The comparison of efficiencies shows that the assumed degree of the polynomial is crucial for selecting the most efficient…

The basic question under study was whether, or to what extent, the regular use of a library induces a modification in the user's structure of tastes and activities. In the spring of 1972, detailed interviews were conducted with 400 library users and 200 matched nonusers in two middle sized Hungarian towns. Interviewees were asked to evaluate, on a…

This paper reviews five broad types of research that are designed to determine whether or how teacher education has made a difference to teachers. The five genres consist of: (1) a line of reasoning about where one might look for the effects of teacher education and how one might design a research study to see the impact of teacher education; (2)…

This newsletter describes a research design enabling descriptive, comparative, evaluative follow-up studies of individual development in social contexts related to schooling. In addition, it describes a research project focusing mainly on evaluative studies of the ability of the educational system to confer, on different individuals in various…

This conference paper discusses two factors which seem to be responsible for the lack of clear progress in research dealing with motivation and learning in the schools: first, an overemphasis on the presumed influence of motivation on learning, which has resulted in a neglect of the many other processes that are directly influenced by motivational…

The problem of the appropriate comparison group for bereavement studies is discussed. The use of the retrospective pretest design is illustrated through a longitudinal study of bereavement outcome following pregnancy loss, involving 138 bereaved women and a comparison group of 215 currently pregnant women. (SLD)

This study found that accuracy in predicting the out-of-home placement of children with severe disabilities increased little in a large cross-sectional sample (n=5,992) over a smaller semilongitudinal sample (n=141). Factors such as age, adaptive and maladaptive behavior, and ethnicity are discussed. (Author/JDD)

This study by two Ph.D. students in library science reviewed a systematic sample of the research literature in library and information science published in 62 core library journals in 1983 to order to identify substantive articles and compare their findings on research methodologies and trends with those reported in a similar study performed in…

This manual details a research design for the longitudinal and comparative evaluation of nursing education currently being conducted by the National Second Step Project at Sonoma State University. Chapter 1 describes the purpose, background, and context and substance of the Second Step model. Chapter 2 considers the design of a multicampus…