Purpose of the Study: Missing data are a common problem encountered while implementing measurement instruments. Yet the extent to which reliability, validity, average discrimination and difficulty of the test results are affected by the missing data has not been studied much. Since it is inevitable that missing data have an impact on the…

Small samples are common in growth models due to financial and logistical difficulties of following people longitudinally. For similar reasons, longitudinal studies often contain missing data. Though full information maximum likelihood (FIML) is popular to accommodate missing data, the limited number of studies in this area have found that FIML…

Community-Based Participatory Research (CBPR) has been proposed as an equitable, empowering partnership approach to collaborative research. International literature about the ethical implications of CBPR suggests a continuing strong interest in the topic. However, there is a notable lack of research that captures the "experience" of…

Over the past 10 years, crises surrounding replication, fraud, and best practices in research methods have dominated discussions in the field of psychology. However, no research exists examining how to communicate these issues to undergraduates and what effect this has on their attitudes toward the field. We developed and validated a 1-hr lecture…

The research problems of this study are the difficulties in the explanation of the phenomenon of reading in its accelerated transformations by quantitative sociological methods, because of failure to comply with a number of factors: first, the social aspects of the purchase, consumption and possession of reading materials have not yet been…

In the fall of 2017, ACT began providing a limited number of supports (also known as accommodations) to English Learner (EL) students in the US taking the ACT® test. The goal of the supports is to remove construct-irrelevant variance in students' scores related to limited English proficiency and allow students to more accurately demonstrate their…

Early childhood educators play a crucial role in supporting the development of our nation's youngest children. Research shows that the quality of interactions between adults and children is one of the strongest predictors of learning outcomes in early childhood classrooms, and that the difference between a more and less effective kindergarten…

Contemporary case studies rely on verbal arguments and set theory to build or evaluate theoretical claims. While existing procedures excel in the use of qualitative information (information about kind), they ignore quantitative information (information about degree) at central points of the analysis. Effectively, contemporary case studies rely on…

This article focuses on methodological and epistemological issues arising from a research project with two Gypsy communities (2010-2012) in the South West of England. Although the two communities seem to share cultural roots and values, and live within a few miles of each other, they have contrasting experiences within the education system and…

Drawing on insights from reflective research accounts in the social sciences, this paper attends to the complexities of conducting cross-boundary educational research. Cross-boundary research is defined as any type of inquiry that is conducted across cultural and/or structural boundaries, including but not limited to race, class, gender, language,…

This essay defines and critiques "methodocentrism", the belief that predetermined research methods are the determining factor in the validity and importance of educational research. By examining research in science studies and posthumanism, the authors explain how this methodocentrism disenables research from taking account of problems…

This response aims to critically evaluate the methodology and aims of the meta-analytic review written by Maggin and Johnson (2014). The present authors systematically provide responses for each of the original criticisms and highlight concerns regarding Maggin and Johnson's methodology, while objectively describing the current state of evidence…

This commentary is a response to those of Hall (2016) and Winebrenner (2016), which in turn were responses to the article the authors wrote on modality preferences and learning styles (Lodge, Hansen, & Cottrell, 2016). There are several key points the authors wish to address in this reply. Most importantly, and aligned with the aims and focus…

This dissertation is aimed at investigating the impact of missing data and evaluating the performance of five selected methods for handling missing responses in the implementation of Cognitive Diagnostic Models (CDMs). The five methods are: a) treating missing data as incorrect (IN), b) person mean imputation (PM), c) two-way imputation (TW), d)…

In this paper, we investigate two purported problems with Bayesian Knowledge Tracing (BKT), a popular statistical model of student learning: "identifiability" and "semantic model degeneracy." In 2007, Beck and Chang stated that BKT is susceptible to an "identifiability problem"--various models with different…