The Process Density Index (PDI), originally developed by Edwards, is a potentially useful metric for assessing phonological development that is based on the average number of phonological process applications per word in a speech sample. The purpose of the present study was to gather PDI reference data for Dutch-speaking children. Speech samples…

Body mass index is a common proxy for proportion of body fat. However, body mass index may not classify youth similarly across ages and ethnicities. We used sex- and ethnic-specific receiver operating characteristic curves to determine how obesity classifications compared between body mass index and dual energy x-ray absorptiometry-based body fat…

This paper assesses and compares the prevalence of plagiarism across different student and assignment characteristics at a university in Vietnam, using the similarity index reported by the text-matching software Turnitin as a proxy measure of plagiarism on a sample of 681 student papers. The findings present a level of match higher than reported…

We update Ferree and Hall’s (1996) examination of the stratification systems of gender, race, and class in introductory textbooks. Using a sample of textbooks from 2003 through 2010, we explore 24 introductory sociology textbooks to determine the relationship between categories of gender, race, and class and levels of analysis. Previous research…

This study investigates the effects of women's education and labor force ratio on the level of development in countries. We use a complete dataset covering 44 countries over the period 1990-2010. It comprises the following: education index, the ratio of girls to boys in primary and secondary education, income per capita, human development index,…

This paper calculates a human Wellbeing Composite Index (WCI) for 42 countries, belonging to the European Economic Space, North Africa and the Middle East, as an alternative to the shortcomings of other well-known measures of socio-economic development (i.e. Gross Domestic Product per head and Human Development Index). To attain this goal,…

We derived an index of high school academic rigor by optimizing the prediction of first-year college GPA based on high school courses taken, grades, and indicators of advanced coursework. Using a large data set (n~108,000) and nominal parameterization of high school course outcomes, the high school academic rigor (HSAR) index capitalizes on…

This study examines the Outgroup Prejudice Index (see "Research in Education," 83, 2010) to see what factors best predict levels of outgroup prejudice among adolescents living in northern England. A sample of 2,502 eleven- to sixteen-year-old secondary school pupils completed a questionnaire that included measures of outgroup prejudice,…

The longitudinal development of the intraindividual coupling between academic achievement, interest, and self-concept of ability (SCA) was analyzed in a sample of approximately 1,000 children between grades 1 and 12 (ages 6-17). Across all calculated indexes, the average level of coupling was positive. Individuals generally felt competent and…

Tables are presented for the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) IQ and index scores by education level for both the U.S. and Canadian normative samples. This allows clinicians to provide more accurate identification of relative strengths or weaknesses, compared to expectations from an individual's background, rather than…

The "National Index of Violence and Harm" (NIVAH) tracks levels of violence and harm in the United States and identifies trends over the study period 1995-2003. NIVAH is comprised of nineteen variables in the areas of interpersonal, intrapersonal, institutional and structural violence and harm as experienced by people in the U.S. Two…

The functional equivalency for three indices of lifetime polydrug use was examined in a sample of adolescents (N=794). The following indices were included in analyses: (a) a count of lifetime self-report of substances used; (b) an index weighted by the severity of the substances used; and (c) a hierarchical index of substance use. Analyses for…