Linear functional relationships are intended to be symmetric and therefore cannot generally be accurately estimated using ordinary least squares regression equations. Orthogonal regression (OR) models allow for errors in both "Y" and "X" and therefore can provide symmetric estimates of these relationships. The most…

Purpose: Communication apprehension (CA) is the fear or anxiety about communicating. In addition, self-perceived communication competence (SPCC) refers to the learners' perception of their competence. CA hampers individuals' ability to communicate effectively in various communication contexts, which has an impact on their employability. Confident…

The aim of the study is the development of methodology for accurate estimation of electric vehicle demand; which is paramount regarding various aspects of the firms decision-making such as optimal price, production level, and corresponding amounts of capital and labor; as well as supply chain, inventory control, capital financing, and operational…

Computer-based assessment (CBA) is a top-rated tool for conducting assessments, mapping learning outcomes, and selecting new candidates. Research that examines the development and use of CBA is also increasing from year to year, so without bibliometric analysis, it would be quite challenging to keep up with all of these studies. This study aims to…

The use of real contexts and history in the teaching of statistical principles holds much attraction in the classroom. This is especially so when the examples used are in situations that are quite out of the ordinary but can lead to further investigation by the students. Previous instances of these have been used with great effect with sporting…

Disparities in Mathematics performance have been shown across race and gender for decades, although little research has reported the race by gender nexus in terms of disparity. In turn, research done to ameliorate these disparities have assumed that these differences are primarily among student populations who need remedial learning improvement.…

Over the past three decades, children from low-income families have increasingly been attending different public schools than those from more affluent families. Though recent work has helped us understand patterns of income segregation between districts and schools within districts, we know little about segregation of students as they experience…

This paper examines the relationship between early geometric skills, behavioral self-regulation skills, teacher-mother reported self-regulation skills, child age and family income in 5-6 year-old children. The participants (N = 202; 104 girls, 98 boys) average age was 71 months (sd = 4.82; Data on race/ethnicity were not asked to participants).…

Previous research has suggested mixed results concerning gifted populations and achievement goal orientation. This study investigated achievement goal orientation in honors and general education undergraduate students, exploring the factor structure of a commonly used assessment and looking at ability level differences using two types of…

More community college professors are replacing expensive commercial textbooks with no-cost open educational resources (OER) to help make college more affordable for their students. With students having no financial reason to delay or forgo textbook purchases, many instructors also expect OER adoption will lead to improvements in academic outcomes…

Applied educational researchers may be interested in exploring random slope effects in multilevel models, such as when examining individual growth trajectories with longitudinal data. Random slopes are effects for which the slope of an individual-level coefficient varies depending on group membership, however these effects can be difficult to…

Although variable-oriented analyses are dominant in developmental psychopathology, researchers have championed a person-oriented approach that focuses on the individual as a totality. This view has methodological implications and various person-oriented methods have been developed to test person-oriented hypotheses. Configural frequency analysis…

Background/Context: Methodological background: Meta-analysis typically depends on the assumption that true effects follow the normal distribution. While assuming normality of effect "estimates" is often supported by a central limit theorem, normality for the distribution of interventions' "true" effects is a computational…

Genotype-by-environment interaction (GxE) studies probe heterogeneity in response to risk factors or interventions. Popular methods for estimation of GxE examine multiplicative interactions between individual genetic and environmental measures. However, risk factors and interventions may modulate the total variance of an epidemiological outcome…

We propose a novel estimator for use in a fuzzy regression discontinuity setting. The estimator can be thought of as extrapolating the traditional fuzzy regression discontinuity estimate or as an observational study that adjusts for endogenous selection into treatment using information at the discontinuity. We show that it can be motivated as…