A geographic information system (GIS) approach systematically assessed whether population density and distribution of community resources contributed to caregiver reported community participation outcomes for 124 adults with autism spectrum disorder (ASD). Regression analyses examined whether GIS measures predicted community participation in areas…

Background: Recently, states have experienced widely varying participation in annual assessments, with the opt-out movement concentrated in New York State and Colorado. Geographic variation between and within states suggests that the diffusion of opting out is multilayered and an appropriate phenomenon to explore geographic dimensions of social…

Purpose: This paper aims to explore the influence of wealth, transparency and democracy on the number of universities per million people ranked among the top 300 and 500. The highly ranked universities in the world tend to be concentrated in a few countries. Design/Methodology/Approach: ANOVA was used to test the differences between the two groups…

Although the use of simulation to teach the sampling distribution of the mean is meant to provide students with sound conceptual understanding, it may lead them astray. We discuss a misunderstanding that can be introduced or reinforced when students who intuitively understand that "bigger samples are better" conduct a simulation to…

In an effort to better understand aggregate patterns in the way elementary school students are assigned to classes, we conduct a careful analysis of observed classroom assignment outcomes in the 5th grade in North Carolina elementary schools. First, we model the probability that a pair of students are classmates as a function of the…

Despite an overall increase in college attendance, low-income youth and particularly those in the foster care system are less likely to attend college (Wolanin, 2005). Although youth in foster care report high educational aspirations, as little as 4% obtain a 4-year college degree (Nixon & Jones, 2007). The purpose of this study is to explore…

We propose a nonparametric (or distribution-free) procedure for testing the equality of several population variances (or scale parameters). The proposed test is a modification of Bakir's (1989, Commun. Statist., Simul-Comp., 18, 757-775) analysis of means by ranks (ANOMR) procedure for testing the equality of several population means. A proof is…

Three field studies compared helping behavior across a sample of 24 small, medium and large cities across the United States. The relationship of helping to statistics reflecting the demographic, social, and economic characteristics of these communities was then examined. The strongest predictors of city differences in helping were population size,…

A regression analysis was conducted of factors that help to explain the variance in physician distribution and which identify those factors that influence the maldistribution of physicians. Models were developed for different geographic areas to determine the most appropriate unit of analysis for the Western Missouri Area Health Education Center…

The impact of population density on the likelihood of Aid to Dependent Children (ADC) clients becoming economically self-sufficient was examined through a study of 2,647 ADC recipients referred to a total of 8 comprehensive vocational assessment centers (CVACs) for ADC clients that were established in Ohio in 1992. Of the CVACs, two were from each…

The sister cities of Brownsville, Texas and H. Matamoros Tamaulipas represent a microcosm of United States-Mexico border cities. The combined characteristics of urban poverty, an agricultural-based economy and high unemployment, in a predominantly Hispanic population, coupled with a high percentage of illegal aliens produce a situation of poor…

The document contains two reports on consequences of population trends for families and older adults in the United States. The reports were submitted as testimony before congressional committees on population and aging. The first report discusses projected changes in American family life in light of population growth, enrollment in schools and…