Well-chosen covariates boost the design sensitivity of individually and cluster-randomized trials. We provide guidance on covariate selection generating an extensive compilation of single- and multilevel design parameters on student achievement. Embedded in psychometric heuristics, we analyzed (a) covariate "types" of varying…

Data donation is a novel approach to collecting digital trace data, where users are asked to download their retrospective data from a platform and share them with the researchers. Little is known about the willingness to donate data and the potential bias that may arise from nonparticipation. We conducted a study among over 900 German Facebook…

Mailing campaigns are a way to keep longitudinal survey respondents engaged. While mailings usually include a survey answer request, sometimes respondents are contacted between-waves to update contact information or simply to keep respondent contact. Research on the actual impact of these between-wave contacts on response rates is scarce. This…

This study explores how qualitative health researchers navigate the demands of medical research ethics committees in Germany where qualitative research is subject to approval only when it is conducted in medical contexts. We present the results of a grounded theory study to investigate qualitative health researchers' experiences with procedural…

This paper explores the personal experiences of Sandra Kaire as a postdoctoral researcher who worked with Margaret Somerville in relation to methodological approaches. The ideas were initially developed in consultation when Sandra worked together with Margaret at Western Sydney University, Australia. The paper explores Sandra's personal…

Probes are follow-ups to survey questions used to gain insights on respondents' understanding of and responses to these questions. They are usually administered as open-ended questions, primarily in the context of questionnaire pretesting. Due to the decreased cost of data collection for open-ended questions in web surveys, researchers have argued…

This study uses an education in emergencies (EiE) lens and a scientometric approach to examine the educational research landscape during the COVID-19 pandemic by analyzing 95,628 publications indexed in the Web of Science Core Collection database from 2020 to February 2023. It employed descriptive and network approaches to map growth trajectory,…

Research Findings: Prosocial behavior in early childhood can be assessed by various informants and methodologies, but the information each provides may differ in meaningful ways. The present study measured and compared young children's (N = 486; age: M = 48.51 months, SD = 8.22) prosocial behavior based on parent reports, teacher reports, and…

Public speaking often imposes a nerve-wracking atmosphere in the L2 classrooms. Consequently, an alternative to the anxiety-arousing activity by using advanced technology for pedagogy is urgent. Prior publications reported the use of virtual reality (VR) for training public speaking and alleviating students' public speaking anxiety (PSA). However,…