In a randomized controlled trial, a decision needs to be made about the total number of subjects for adequate statistical power. One way to increase the power of a trial is by including a predictive covariate in the model. In this article, the effects of various covariate adjustment strategies on increasing the power is studied for discrete-time…

This study investigated whether children with disabilities are excluded from mainstream child development research. Fifteen per cent of 533 articles from "Child Development" and "Developmental Psychology" (1996-2010) were randomly selected. The exclusion rate was 89.9% when no mention of participants with disabilities was…

This chapter discusses how to improve validity in SoTL studies through generating appropriate measures and using designs that examine causality between an activity and students' performance. [Part II available at EJ1029365.]

The goal of this chapter is to recommend quality criteria to guide evaluators' selections of sampling designs when mixing approaches. First, we contextualize our discussion of quality criteria and sampling designs by discussing the concept of interpretive consistency and how it impacts sampling decisions. Embedded in this discussion are…

The smartphone is a recent technological addition to post-secondary education and it has both educational and non-educational applications. This study examines the educational use of smartphones using principles from actor-network theory (ANT). The purpose of the investigation was to learn about the multiple entanglements of students, teachers and…

Single case designs (SCDs) generally consist of a small number of short time series in two or more phases. The analysis of SCDs statistically fits in the framework of a multilevel model, or hierarchical model. The usual analysis does not take into account the uncertainty in the estimation of the random effects. This not only has an effect on the…

The increasing availability of data from multi-site randomized trials provides a potential opportunity to use instrumental variables methods to study the effects of multiple hypothesized mediators of the effect of a treatment. We derive nine assumptions needed to identify the effects of multiple mediators when using site-by-treatment interactions…

This article provides an examination of a range of mixed methods research projects that employ Internet-mediated technologies (IMT) for data collection. Using a case study approach, this article allows for the uncovering of a process by which IMT are used as a data collection medium in mixed methods praxis. Under the theoretical position of medium…

International collaboration in social work research, particularly research in the global south, presents unique opportunities for the personal and professional development of researchers and students alike. Yet data to help direct the process are limited. Using a research project recently carried out in Ghana as background, the authors present…

The primary goal of this study is to create and test a lecture-capture system that can rearrange visual elements while recording is still taking place, in such a way that student performance can be positively influenced. The system we have devised is capable of integrating and rearranging multimedia sources, including learning content, the…

This article explores transnational activism within Education for All (EFA), looking specifically at the strategic use of information and research by transnational advocacy organizations. Through a comparative case-study examination of two prominent civil society organizations within the EFA movement--the Asia South Pacific Association for Basic…

This paper reports implementation results of designing a workshop for mathematics teachers in introducing classroom social norms. The participants are eight mathematics teachers in primary and junior secondary level. Teachers learned and did some activities about social norms during the workshop. First, they watched an example of learning videos…

The growing national attention to students' learning trajectories (LTs) renews the opportunity to explore the ways that teachers may use students' thinking in their instruction. In this article, we examine teachers' learning of two frameworks, one for students' thinking in a particular domain and one for broad student-centered instructional…

In this article, we test an alternative approach to creating a counterfactual basis for estimating individual and average treatment effects. Instead of using control/comparison groups or before-measures, the so-called Counterfactual as Self-Estimated by Program Participants (CSEPP) relies on program participants' self-estimations of their own…

This case study centers on giving real, detailed, and convenient tips for young and new qualitative researchers, especially for graduate students who are new in the field. In general, this case discusses the basics of becoming a qualitative researcher. In particular, I talk about my experience on starting my 'journey' as a qualitative researcher.…