Observers given brief exposures of pairs of colored bars and asked to report both the color and the orientation of each bar showed evidence of stochastic independence between reports of the 4 features (2 colors and 2 orientations). The authors also found virtually perfect stochastic independence between reports of colors and directions of motion…

Period divorce measures can misrepresent the underlying behavior of birth cohorts as changes in cohort timing produce changes in period probabilities of divorce. Building on methods used to adjust period fertility and marriage measures, we adjust U.S. period divorce rates for timing effects, calculating a timing index for every year between 1910…

In survey research, sometimes the formation of groupings, or aggregations of cases on which to make an inference, are of importance. Of particular interest are the situations where the cases aggregated carry useful information that has been transferred from a sample employed in a previous study. For example, a school to be included in the sample…

This study applies competing risks survival analysis to describe outcome attainment for an entire cohort of students who first attended a Midwestern community college in the Fall Semester 2001. Outcome attainment included transfer to a four-year institution, degree/ certificate attainment from the community college under study, and transfer to a…

In recent years, many critical education policy reforms across the American states have been attempted through citizen ballots. This study examines citizens' voting behavior on three salient education initiatives proposed in California. Analyses of exit poll data indicate that voting on education initiatives is greatly influenced by ideological…

Standard least squares analysis of variance methods suffer from poor power under arbitrarily small departures from normality and fail to control the probability of a Type I error when standard assumptions are violated. This article describes a framework for robust estimation and testing that uses trimmed means with an approximate degrees of…

Purpose: Most people profess to care for the environment, but there is considerable diversity on what people generally care for and the reasons for their concern. This study aims to understand college students' worldviews, attitudes, and perceptions and determine the factors affecting their environmental concern. The study aims to focus on college…

The stochastic simulation of chemical reactions, specifically, a simple reversible chemical reaction obeying the first-order, i.e., linear, rate law, has been presented by Martinez-Urreaga and his collaborators in this journal. The current contribution is intended to complement and augment their work in two aspects. First, the simple reversible…

A statistical analysis of multiple-choice answers is performed to identify anomalies that can be used as evidence of student cheating. The ratio of exact errors in common (EEIC: two students put the same wrong answer for a question) to differences (D: two students get different answers) was found to be a good indicator of cheating under a wide…

A national probability sample of children who have been in child welfare supervised placements for about one year identifies the characteristics (e.g., age, training, education, health, and home) of the foster parents, kinship foster parents, and group home caregivers. Caregiving respondents provided information about their backgrounds.…

Having a female first-born child significantly increases the probability that a woman's first marriage breaks up. Using this exogenous variation, recent work finds that divorce has little effect on women's mean household income. We further investigate the effect of divorce using Quantile Treatment Effect methodology and find that it increases…

This article reviews current methods for evaluating models in the cognitive sciences, including theoretically based approaches, such as Bayes factors and minimum description length measures; simulation approaches, including model mimicry evaluations; and practical approaches, such as validation and generalization measures. This article argues…

We investigated the effects of an intervention using high-probability request sequences with embedded peer modeling to increase social interactions of children with autism in a classroom. The effects of the intervention on compliant responding to social requests and social behaviors were monitored using a single-subject multiple baseline design…

Background: Through classroom preparation and exposure to past papers, textbooks and practice tests students develop expectations about examinations: what will be asked, how it will be asked and how they will be judged. Expectations are also involved in the automatic process of understanding questions. Where a question and a student's expectations…

Argys, L.M., Rees, D.I., Averett S.L., & Witoonchart, B. (2006). Birth order and risky adolescent behavior. "Economic Inquiry", 44(2), 215-233 demonstrated that a strong link exists between birth order and adolescent risky behavior. Using data on 10th graders from the National Education Longitudinal Study of 1988, we extend the work of Argys et…