Text classification has allowed researchers to analyze natural language data at a previously impossible scale. However, a text classifier is only as valid as the the annotations on which it was trained. Further, the cost of training a classifier depends on annotators' ability to quickly and accurately apply the coding scheme to each text. Thus,…

This volume employs a multidisciplinary approach to research on a high-profile topic very much on the agenda of state and national policy leaders: early childhood development and education. It aims to reflect how scholarly perspectives shape the contours of knowledge generation, and to illuminate the gaps that prevent productive interchange among…

Observable data in empirical social and behavioral science studies are often categorical (i.e., binary, ordinal, or nominal). When categorical data are outcomes, they fail to maintain the scale and distributional properties of linear regression and factor analysis. Attempting to estimate model parameters for categorical outcome data with the…

In paired experiments, participants are grouped into pairs with similar characteristics, and one observation from each pair is randomly assigned to treatment. The resulting treatment and control groups should be well-balanced; however, there may still be small chance imbalances. Building on work for completely randomized experiments, we propose a…

The increasing number of studies on the STEM approach necessitates a holistic and comparative evaluation of the results. This study aims to investigate and evaluate the cumulative results of the experimental studies used STEM approach for preschool children. In this study, the meta-analysis method was used. Despite a great number of studies about…

Research-practice partnerships often face a fundamental tension: well-designed, high-quality research takes time, but practitioners and policy makers need answers to pressing questions as soon as possible. In this article, Jason Sachs, Meghan McCormick, JoAnn Hsueh, and Catherine Snow discuss this mismatch between the tight timelines of…

Research on anxiety and motivation in second language (L2) learning is proliferating. However, these two individual differences are commonly measured by self-report questionnaires, the psychometric properties of which have been questioned. Building on previous works on study quality, this methodological synthesis systematically describes and…

Purpose: When we speak, we gesture, and indeed, persons with aphasia gesture more frequently. The reason(s) for this is still being investigated, spurring an increase in the number of studies of gesture in persons with aphasia. As the number of studies increases, so too does the need for a shared set of best practices for gesture research in…

Previous research of inquiry-based learning in natural science education indicates that there are different methodological trends and paradigms in the study of these issues. The aim of this research has been to analyze the selected relevant studies on inquiry-based learning in natural science education in order to assess their scope and…

This commentary discusses the issue of small samples in instructed second language acquisition research. We discuss the current state of affairs, and consider the disadvantages of small samples. We also explore other considerations regarding sample size, such as research ethics and ecological validity. We present a range of recommendations for…

This study introduces an innovative meta-analytic approach, two-stage multilevel meta-analysis that considers the hierarchical structure of single-case experimental design (SCED) data. This approach is unique as it is suitable to include moderators at the intervention level, participant level, and study level, and is therefore especially…

Capturing developmental and learning-induced brain dynamics is extremely challenging as changes occur interactively across multiple levels and emerging functions. Different levels include the (social) environment, cognitive and behavioral levels, structural and functional brain changes, and genetics, while functions include domains such as math,…

Background: The COVID-19 pandemic and the subsequent public health response led to an unprecedented disruption in educational instruction in the U.S. and around the world. Many schools quickly moved to virtual learning for the bulk of the 2020 spring term and many states cancelled annual assessments of student learning. The 2020-21 school year…

In this second column regarding research approaches, we continue our discussion of qualitative and quantitative research focusing on the specializations of developmental education, learning assistance, and student success. Whereas the previous column discussed mixed methods as an underutilized method, similarly, design research has the potential…

The generation effect is moderated by experimental design, as are a number of other encoding variables, such that the generation effect recall is typically larger in mixed-list than pure-list designs. In typical experiments on design effects, each study list is followed by its own recall test. Rowland, Littrell-Baez, Sensenig, and DeLosh (2014)…