Doctoral education in the United States had been scrutinized because of high-attrition rates reported as an average of 50 percent. Emerging from Lovitts (2001), this research examined students' attendance at Mock Orals (MO) and its relationship to their academic and social integration, cognitive maps, goals, rates of attrition, and retention in a…

The purpose of this study was to investigate how modeling-based instruction combined with an interactive-engagement teaching approach promotes students' problem solving abilities. I focused on students in a calculus-based introductory physics course, based on the matter and interactions curriculum of Chabay & Sherwood (2002) at a large state…

Exploratory factor analysis (EFA) is generally regarded as a technique for large sample sizes ("N"), with N = 50 as a reasonable absolute minimum. This study offers a comprehensive overview of the conditions in which EFA can yield good quality results for "N" below 50. Simulations were carried out to estimate the minimum required "N" for different…

As research shows that the knowledge and use of models and modelling by teachers is limited, particularly for predicting phenomena, we developed and applied a sequence of three representations of a simulated model focusing on polarization and specifically showing the behaviour of an atom, and forces exerted on a dipole and an insulator, when a…

Differential item functioning (DIF) analysis is a statistical technique used for ensuring the equity and fairness of educational assessments. This study formulates a new DIF analysis method using the information similarity index (ISI). ISI compares item information functions when data fits the Rasch model. Through simulations and an international…

This article considers the issues that are involved in effective choral conducting from an aesthetic dimension. Drawing upon research, theories and practice, it provides some insight into the nature of communication and the significance of gesture on vocal outcome as well as qualities of leadership concomitant with such musical activity. The…

The study presents the results of an educational intervention during in-service training of secondary school teachers in Cyprus, which led to participants' development. The aim was twofold, first to reveal teachers' conception about cooperative learning and second to help teachers through simulation of cooperative learning to construct the…

Contemporary learning research and development that is embedded in primary and secondary schooling is increasingly acknowledging the significance of a variation approach for enhancing the possibility of learning. However, the variation approach has so far attracted very little attention in higher education, but where it has, the results have been…

In educational effectiveness research, multilevel data analyses are often used because research units (most frequently, pupils or teachers) are studied that are nested in groups (schools and classes). This hierarchical data structure complicates designing the study because the structure has to be taken into account when approximating the accuracy…

This is a ready-to-use simulation that has high school students portraying all of the key players that decide how water from the Colorado River will be allocated. Students act as judges, lobbyists, news analysts, and even protesters during a mock water conference. Water supply is promised beyond nature's delivery, so the problem is real and will…

This article describes the results of a simulation study to investigate the impact of missing data on the detection of differential item functioning (DIF). Specifically, it investigates how four methods for dealing with missing data (listwise deletion, zero imputation, two-way imputation, response function imputation) interact with two methods of…

Interactive simulations are entering mainstream science education. Their effects on cognition and learning are often framed by the legacy of information processing, which emphasized amodal problem solving and conceptual organization. In contrast, this paper reviews simulations from the vantage of research on perception and spatial learning,…

Pressing questions about the merits of market accountability in K-12 education have spawned a large scholarly literature. Unfortunately, much of that literature is of limited relevance, and much of it is misleading. The studies most widely cited in the United States used intense scrutiny of a few small-scale, restriction-laden U.S. school choice…

Background: The relationship between psychopathic traits and aggression in children may be explained by their reduced sensitivity to signs of distress in others. Emotional cues such as fear and sadness function to make the perpetrator aware of the victim's distress and supposedly inhibit aggression. As children high in psychopathic traits show a…

Simulation-based teaching (SBT) is increasingly used in medical education. As an alternative to other teaching methods there is a lack of evidence concerning its efficacy. The aim of this study was to evaluate the potency of SBT in anesthesia in comparison to problem-based discussion (PBD) with students in a randomized controlled setting.…