Education researchers frequently have to choose between statistical models for their data, and in many cases the candidate models or parameters can be listed in a sequence, m=1,...,M, from less preferable choices to more. For instance, in choosing a bandwidth for regression discontinuity designs, researchers would favor the largest possible…

In linear regression models estimated by ordinary least squares, it is often desirable to use hypothesis tests and confidence intervals that remain valid in the presence of heteroskedastic errors. Wald tests based on heteroskedasticity-consistent covariance matrix estimators (HCCMEs, also known as sandwich estimators or simply "robust"…

Currently, the number of science, technology, engineering, and mathematics (STEM) jobs are expanding faster than the U.S. labor market; yet many individuals with STEM degrees choose to work in other fields. The present study uses social cognitive career theory as a framework for researching the impact of several variables on future expectations to…

Background: Explore associations between nutrition, science, and mathematics knowledge to provide evidence that integrating food/nutrition education in the fourth-grade curriculum may support gains in academic knowledge. Methods: Secondary analysis of a quasi-experimental study. Sample included 438 students in 34 fourth-grade classrooms across…

The main purpose of the present study was to investigate the relationship between the serving leadership and the managers' ability with organizational trust of sport clubs staffs in Erzurum. The research methodology was established based on correlation-descriptive type of study; it also was an applied type of study regarding to its purpose. The…

How does teachers' gender influence their information and communication technology-based instruction in Saudi Arabian government schools? Using unique data collected in Riyadh, Saudi Arabia, in 2014, the analyses presented here show that male and female teachers in intermediate school classrooms differently use information and communication…

Data collected from surveys can result in hundreds of variables and thousands of respondents. This implies that time and energy must be devoted to (a) carefully entering the data into a database, (b) running preliminary analyses to identify any problems (e.g., missing data, potential outliers), (c) checking the reliability and validity of the…

Purpose: The aim of the current study is twofold. First, it investigates the relationship between mobbing and organizational identification (OI) as an organizational attitude. Second, it explores the moderating effect of perceived organizational support (POS) on the relationship between mobbing and organizational identification. We proposed that…

Teachers who offer undergraduate courses agree widely on the importance of writing assignments to further undergraduate education. And yet, there is a great deal of variance among teachers in their writing assignments; some teachers assign no writing whatsoever. To determine the variables that influence the decisions of teachers about whether to…

Basically the current study sought to assess the perception of students regarding the role of teacher communication skills in their academics success. Comprehensive questionnaire carrying information including social economic and demographic aspects of the study was designed by the researcher to achieve the set objectives. All those universities…

We examined Chinese adolescents' aspirations and explored the relationship between relative intrinsic aspirations (RIA) and prosocial behaviors and whether adolescents with different levels of RIA have different emphases on self- and other-oriented considerations during prosocial decision making. In Study 1, 236 participants were recruited and…

Family history events have been shown to be reliable predictors of eating and body image concerns; however, little is known regarding how family history events compare in a clinical sample, or if these events differ by gender. The current study addresses this paucity, focusing on 3,129 university students seeking clinical services. Having a family…

The literature on student evaluations of teaching (SETs) generally presents two opposing camps: those who believe in the validity and usefulness of SETs, and those who do not. Some researchers have suggested that 'SET deniers' resist SETs because of their own poor SET results. To test this hypothesis, I analysed essays by 230 SET researchers (170…

Observation is one of the basic methods in science. It is not only an epistemological method itself, but also an important competence for other methods like experimenting or comparing. However, there is little knowledge about the relation with affective factors of this inquiry method. In our study, we would like to find out about the relations of…

This study investigated the associations among peer status, friendship jealousy, and relational aggression in early adolescence, with a focus on peer status as a moderator of the association between relational aggression and friendship jealousy. Three hundred eighteen sixth-, seventh-, and eighth-grade students completed a sociometric assessment…