Amid recent progress in cognitive development research, high-quality data resources are accumulating, and data sharing and secondary data analysis are becoming increasingly valuable tools. Integrative data analysis (IDA) is an exciting analytical framework that can enhance secondary data analysis in powerful ways. IDA pools item-level data across…

Purpose: This study was designed to test two hypotheses about apraxia of speech (AOS) derived from the Directions Into Velocities of Articulators (DIVA) model (Guenther et al., 2006): the feedforward system deficit hypothesis and the feedback system deficit hypothesis. Method: The authors used noise masking to minimize auditory feedback during…

There is accumulating evidence that autistic-related traits in the general population lie on a continuum, with autism spectrum disorders representing the extreme end of this distribution. Here, we tested the hypothesis of a possible relationship between autistic traits and brain morphometry in the general population. Participants completed the…

A national survey of inorganic chemists explored the self-reported topics covered in foundation-level courses in inorganic chemistry at the postsecondary level; the American Chemical Society's Committee on Professional Training defines a foundation course as one at the conclusion of which, "a student should have mastered the vocabulary,…

Despite the prevalence of academic libraries adopting web-scale discovery tools, few studies have quantified their effect on the use of library collections. This study measures the impact that EBSCO Discovery Service has had on use of library resources through circulation statistics, use of electronic resources, and interlibrary loan requests.…

In this study, teams in a strategic management classroom were given one of two versions of an assignment related to the development of a team contract: independent individual reflections on desired team behaviors versus team-level reflections on desired behavioral norms. Results of a multivariate analysis of covariance, controlling for gender and…

The present paper gives a general introduction to the linear logistic test model (Fischer, 1973), an extension of the Rasch model with linear constraints on item parameters, along with eRm (an R package to estimate different types of Rasch models; Mair, Hatzinger, & Mair, 2014) functions to estimate the model and interpret its parameters. The…

Slobin's (1996) "thinking for speaking" hypothesis has been recently adopted by second language researchers as a valuable lens from which to examine the complexities of possible conceptual restructuring during interlanguage development. This paper reviews a sample of studies analyzing the linguistic and conceptual patterns observed in…

This report presents the statistical theory underlying the "RCT-YES" software that estimates and reports impacts for RCTs for a wide range of designs used in social policy research. The report discusses a unified, non-parametric design-based approach for impact estimation using the building blocks of the Neyman-Rubin-Holland causal…

Personality covers the whole nature of the individual. Socio Economic Status refers to the position that an individual and family occupies with reference to prevailing average standards, cultural possession and participation in group activity of community. This paper reports on relationship between Personality and Socio Economic Status of student…

Six specific hypotheses have been developed to account for why Caucasians have higher rates of drug use compared to African-Americans. This article utilizes data from a South Florida-based community study of 893 young adults (1998-2002) to test these hypotheses. Specifically, Caucasians (1) initiate drug use at younger ages than African-Americans…

The aim of this paper is to investigate which adolescents are most and least at risk of experiencing online victimization. The results of logistic regression analyses using data on 2079 adolescents attending secondary school in Bermuda indicate that not all forms of media use place adolescents at risk of experiencing cyberbullying. Adolescents who…

This quantitative study utilized Richard H. Hall's attitudinal attributes of a professional using a Likert scale. The survey was administered to officers in two similar mid-sized police departments. The first agency had 650 officers, while the second had 350 officers. Agency One requires all applicants to possess a bachelor's degree, while Agency…

This study examined the effectiveness of a study skills training session offered at midterm to students enrolled in a large section of "Introductory Psychology." In the training session, students watched a series of five, short videos on effective learning and answered related clicker questions that encouraged them to reflect their own…

The study aims to find out the awareness on learning disabilities among elementary school teachers. The sample for the present study consisted of 500 elementary school teachers of Kerala. In this study the investigator used an Awareness Test on Learning Disabilities to measure the Awareness on Learning Disabilities among Elementary School…