Although accumulating evidence suggests the COVID-19 pandemic is associated with costs
in mental health, the development of students' mental health, including the change from their …

Background: The American family structure has changed in the past few decades due to a
rise in the divorce rate and unmarried women with children. Research suggests a salary …

Background Self‐efficacy has been proposed as a key predictor of alcohol treatment
outcomes and a potential mechanism of success in achieving abstinence or drinking …

A prevailing theory of mathematical problem solving predicts that children will be less
accurate solving a+ b= c+ __ problems versus a+ b= __+ c. However, this has never been …

Adolescence is a formative life phase for the development of personality characteristics.
Although past findings suggest Big Five traits alongside self-esteem as indicators for …

Data pooling is a powerful strategy in empirical research. However, combining multiple
datasets often results in a large amount of missing data, as variables that are not present in …

Researchers often seek to synthesize results of multiple studies on the same topic to draw
statistical or substantive conclusions and to estimate effect sizes that will inform power …

Integrative data analyses have recently been shown to be an effective tool for researchers
interested in synthesizing datasets from multiple studies in order to draw statistical or …

This study examined the use of Bayesian analysis methods for the estimation of item
parameters in a two-parameter logistic item response theory model. Using simulated data …

Complex research questions often need large samples to obtain accurate estimates of
parameters and adequate power. Combining extant data sets into a large, pooled data set is …