Investigating the fit of a parametric model is an important part of the measurement process when implementing item response theory (IRT), but research examining it is limited. A general nonparametric approach for detecting model misfit, introduced by J. Douglas and A. S. Cohen (2001), has exhibited promising results for the two-parameter logistic…

The recent surge in event-related fMRI studies of episodic memory has generated a wealth of information about the neural correlates of encoding and retrieval processes. However, interpretation of individual studies is hampered by methodological differences, and by the fact that sample sizes are typically small. We submitted results from studies of…

Very little explanatory power is required in order for regressions to exhibit statistical significance. This article discusses some of the causes and implications. (Contains 2 tables.)

This article reviews issues and findings from 13 research studies relative to cross-racial supervision. The research in this area indicates that a strong working alliance between the supervisor and student is more likely to happen when supervisors are culturally responsive and competent. However, in order to better appreciate the nature and scope…

This study examines the effectiveness of three risk assessment instruments: Static-99, Risk Matrix 2000 (RM2000) and the Rapid Risk of Sex Offender Recidivism (RRASOR), in predicting sexual recidivism among 27 intellectually disabled sex offenders. The overall sexual offence reconviction rate was 30%, while non-recidivists remained offence-free…

Market forces have driven American higher education from a public good regime to an academic capitalist regime. To examine how this regime shift influences the quality of business education in the US, we use field of specialty, institutional characteristics, demographics, and personal achievements to predict faculty income from inside and outside…

Background: The importance of assessing student learning outcomes has demanded attention from most everyone involved in the higher education enterprise, as accreditation and funding implications are often linked to the results. Faculty, however, are often critical of the assessment process because outcomes assessment is costly with regard to time,…

Over the past decade, continuous quality improvement (CQI) has emerged as a strategy for documenting and systematically building academic program quality. This study used a nationally representative sample of engineering faculty members and students to examine the influence of faculty members' CQI activities on the relationships between student…

Calculators are a controversial, yet widely used tool in mathematics education for all students and especially for students with disabilities. However, little research has explored calculators and students with disabilities. This paper explored the influence of calculator type (four-function and graphing) on the mathematical performance of…

The present article describes the development and initial validation of the Inventory of Microaggressions Against Black Individuals (IMABI) using a sample of 385 undergraduates who self-identified as Black or African American. The IMABI is a 14-item, unidimensional measure of racial microaggressions that captures both microinsults and…

Latent growth curve modeling was used to describe longitudinal trends in community and religious involvement and Marcia's (1966) four identity statuses (diffusion, foreclosure, moratorium, and achievement), as well as to assess relations between involvement and identity change. Cross-lagged regression models explored temporal ordering of relations…

Experiments that involve nested structures may assign treatment conditions either to subgroups (such as classrooms) or individuals within subgroups (such as students). The design of such experiments requires knowledge of the intraclass correlation structure to compute the sample sizes necessary to achieve adequate power to detect the treatment…

A squared semipartial correlation coefficient ([Delta]R[superscript 2]) is the increase in the squared multiple correlation coefficient that occurs when a predictor is added to a multiple regression model. Prior research has shown that coverage probability for a confidence interval constructed by using a modified percentile bootstrap method with…

In this reflective paper, we explore students' local and global thinking about informal statistical inference through our observations of 10- to 11-year-olds, challenged to infer the unknown configuration of a virtual die, but able to use the die to generate as much data as they felt necessary. We report how they tended to focus on local changes…

This study addressed the sampling error and linking bias that occur with small samples in a nonequivalent groups anchor test design. We proposed a linking method called the synthetic function, which is a weighted average of the identity function and a traditional equating function (in this case, the chained linear equating function). Specifically,…