The purpose of this study was to identify the prevalence of mixed research techniques in empirical studies published in gifted education journals. During Phase 1, empirical full-text databases and relevant electronic bibliographic databases related to gifted education were searched during a time span of 10 to 18 years, resulting in the…

The article explores doctoral attrition in South Africa, investigating and comparing the attributions of attrition of doctoral students and PhD programme leaders. The article is based on secondary data analysis of two large studies on doctoral education in South Africa. The main point of the article is that the different understandings of the…

The use of silver in commercial products has proliferated in recent years owing to its antibacterial properties. Food containers impregnated with micro-sized silver promise long food life, but there is some concern because silver can leach out of the plastic and into the stored food. This laboratory experiment gives students the opportunity to…

The Zephyr[TM] BioHarness[TM] (Zephyr Technology, Auckland, New Zealand) is a wireless physiological monitoring system that has the ability to measure respiratory rate unobtrusively. However, the ability of the BioHarness[TM] to accurately and reproducibly determine respiratory rate across a range of intensities is currently unknown. The aim of…

In this rejoinder, the authors provide their thoughts on each of the commentaries of the seven respondents to their article. They find that the response of Kyngdon differs markedly from the others in questioning some basic elements of the methods of analysis that they propose for the construction of a "road map." The authors emphasize that they…

According to the Academic Ranking of World Universities, the world's top 500 universities are located in only 38 countries, with the USA alone having 157 of them. This article investigates the socioeconomic determinants of the wide performance gap between countries, and whether the USA's dominance is largely due to its economic power. A large…

Eye movements were monitored as subjects read sentences containing high- or low-predictable target words. The extent to which target words were predictable from prior context was varied: Half of the target words were predictable, and the other half were unpredictable. In addition, the length of the target word varied: The target words were short…

A range of sources support science learning, including the formal education system, libraries, museums, nature and Science Centers, aquariums and zoos, botanical gardens and arboretums, television programs, film and video, newspapers, radio, books and magazines, the Internet, community and health organizations, environmental organizations, and…

Purpose: The objective was to identify and understand the factors involved in scientists' selection of preferred bioinformatics tools, such as databases of gene or protein sequence information (e.g., GenBank) or programs that manipulate and analyse biological data (e.g., BLAST). Methods: Eight scientists maintained research diaries for a two-week…

The success of data mining relies on the availability of high quality data. To ensure quality data mining, effective information sharing between organizations becomes a vital requirement in today's society. Since data mining often involves sensitive information of individuals, the public has expressed a deep concern about their privacy.…

The purpose of this study was to identify leadership skills desired in effective principals as valued by public school superintendents. The population of this study was superintendents in the Mid-Hudson Valley region of New York (N=121). The study employed quantitative data analysis procedures. Superintendents were asked to respond to 30 items on…

In the last three columns, the authors introduced the idea of ethical reasoning, discussed its importance to education, and briefly dealt with a number of understandings essential to skilled ethical reasoning. In this column, the authors continue this discussion. They distinguish between simple and complex ethical questions and reason through an…

Researchers frequently attempt to identify the specific neurocognitive processes that might be responsible for differences in performance associated with neurological status or other individual difference characteristics by administering two or more conditions of an experimental task to different groups of participants, and focusing on the…

Previous studies suggest that the majority of school psychologists do not believe they receive sufficient supervision, despite a growing body of research providing empirical support for supervision to maintain and improve skills. This study explores the dynamics underlying the challenges of providing adequate supervision to school psychologists.…

A new class of parametric models that generalize the multivariate probit model and the errors-in-variables model is developed to model and analyze ordinal data. A general model structure is assumed to accommodate the information that is obtained via surrogate variables. A hybrid Gibbs sampler is developed to estimate the model parameters. To…