Academic attainment in children with Autism Spectrum Disorder (ASD) is under-studied, with associated factors largely undetermined. Parent-reported attention symptoms, attentional-switching and sustained-attention tasks were examined to determine relationships with mathematics and reading attainment in 124 children aged 7-12 years; sixty-four with…

In the current study, we evaluated various robust statistical methods for comparing two independent groups. Two scenarios for simulation were generated: one of equality and another of population mean differences. In each of the scenarios, 33 experimental conditions were used as a function of sample size, standard deviation and asymmetry. For each…

Fueled by the pressing need for electronic resource usage statistics, librarians are finding themselves being thrust into the role of hunter-gatherer. This article discusses the work done at University Library at Indiana University-Purdue University Indianapolis to provide usage statistics for all its paid subscriptions for a 3-year period. The…

In this paper we present three design principles of language--experience, heterogeneity and redundancy--and present recent developments in a family of models incorporating them, namely Data-Oriented Parsing/Unsupervised Data-Oriented Parsing. Although the idea of some form of redundant storage has become part and parcel of parsing technologies and…

"Gapminder" is a free and easy to use software for visualising real-world data in multiple dimensions. The simple format of the Cartesian coordinate system is used in a dynamic and interactive way to convey a great deal of information. This tool can be readily used to arouse students' natural curiosity regarding world events and to…

Assuming a coin is fair is common place in introductory statistical education. This article offers three approaches to test if a coin is fair. The approaches lend themselves to straightforward simulation studies that can enrich student understanding of joint probability and sample size requirements. Simulation studies comparing the relative merits…

If a teacher is an environmental organizer, like Selene Gonzales-Carillo, the classroom is a conference room, the community garden, or a church parking lot. Students are everyone--from toddlers to the elderly; they come with a variety of levels of formal education. The goal is to increase environmental justice, community well-being, and…

Purpose: The aim of this paper is to develop a theoretical framework and conduct an empirical study across different service sectors to investigate the inter-relationships between organizational learning culture, employee job satisfaction and their impact on customer satisfaction. It also aims to examine an individual-level variable (educational…

In a traditional regression-discontinuity design (RDD), units are assigned to treatment on the basis of a cutoff score and a continuous assignment variable. The treatment effect is measured at a single cutoff location along the assignment variable. This article introduces the multivariate regression-discontinuity design (MRDD), where multiple…

This study used the Students' Attitudes toward Statistics Scale (STATS) to measure attitude toward statistics among a national sample of advertising students. A factor analysis revealed four underlying factors make up the attitude toward statistics construct--"Interest & Future Applicability," "Confidence," "Statistical Tools," and "Initiative."…

We consider here the problem of calculating the moments of binomial random variables. It is shown how formulae for both the raw and the central moments of such random variables may be obtained in a recursive manner utilizing Stirling numbers of the first kind. Suggestions are also provided as to how students might be encouraged to explore this…

The purpose of this study is to document the relationship between physical abuse during childhood and family violence among a group of police officers from the Baltimore Police Department in the United States. Analyzing data from the Police and Domestic Violence in Police Families in Baltimore, Maryland, 1997-1999, this study found a positive…

How do people make rich inferences from such sparse data? Recent research has explored this inferential ability by investigating probabilistic reasoning in infancy. For example, 8- and 11-month-old infants can make inferences from samples to populations and vice versa (Denison & Xu, 2010a; Xu & Denison, 2009; Xu & Garcia, 2008a). The…

Purpose: Using 2 different scoring methods, the authors examined the diagnostic accuracy of both real-word and nonword repetition in identifying Italian-speaking children with and without specific language impairment (SLI). Method: A total of 34 children ages 3;11-5;8 (years;months) participated--17 children with SLI and 17 typically developing…

Two contestants debate the notorious probability problem of the sex of the second child. The conclusions boil down to explication of the underlying scenarios and assumptions. Basic principles of probability theory are highlighted.