As the research on feigning has grown, the number and quality of performance validity tests (PVTs) has increased as well. However, while several PVTs have been developed from assessments commonly used as part of neuropsychological batteries, there has been less exploration for PVTs scored from items in cognitive screeners. The Montreal Cognitive…

Item response theory (IRT) is currently the dominant methodological paradigm in educational and psychological measurement. IRT models are based on assumptions about the relationship between latent traits and observed responses, so the accuracy of the methodology depends heavily on the reasonableness of these assumptions. This dissertation consists…

Aberrant behavior refers to any type of unusual behavior that would not be expected under normal circumstances. In educational and psychological testing, such behaviors have the potential to severely bias the aberrant examinee's test score while also jeopardizing the test scores of countless others. It is therefore crucial that aberrant examinees…

This dissertation aims to bridge the gap between validity theory and the practice of validation. The dissertation employs a three-article approach. Following the introduction in Chapter I, three independent manuscripts representing three empirical studies are presented (i.e., Chapters II - IV). Each chapter is a stand-alone publishable manuscript,…

Historically, psychological tests were assumed to be objective, culture-free, and generalizable to any racial/ethnic minorities or socio-cultural group, even though most tests were standardized, validated, and found reliable with samples consisting only of White, middle-class, English- speaking individuals (The Council of National Psychology…

The purpose of this study is to examine how validity has been presented in technical and other users' manuals for various editions (i.e., revisions) of the same commercially published test over time. Although the unitary view of validity came to prominence more than 30 years ago and has been embraced in the "Standards for Educational and…

In educational and psychological assessments, attending to item response process can be useful in understanding and improving the validity of measurement. This dissertation consists of three studies each of which proposes and applies item response theory (IRT) methods for modeling and understanding cognitive/psychological response process in…

Response style, one common aberrancy in non-cognitive assessments in psychological fields, is problematic in terms of inaccurate estimation of item and person parameters, which leads to serious reliability, validity, and fairness issues (Baumgartner & Steenkamp, 2001; Bolt & Johnson, 2009; Bolt & Newton, 2011). Response style refers to…

Overidentification of minority students in special education is a significant concern. It is imperative that the districts effectively train professionals who administer testing for qualification of special education. The purpose of this qualitative case study was to discover why minority students are disproportionately enrolled in special…

The overrepresentation of English Language Learners (ELL) in special education in the United States has been an ongoing concern for researchers and educators for many years (Dunn, 1968). Despite these concerns, there continues to be limited research in the areas of the assessment and classification practices of school psychologists when working…

This grounded narrative inquiry study analyzes the self-selection transitional career motivations by California Community College chief fundraising executives when considering the pursuit of a California Community College presidency. A theoretical research framework is an approach that integrates narrative inquiry in the development of the…

Across the country, school districts are increasingly seeking out privately contracted psychologists to conduct psychological evaluations. As such, it is increasingly important that psychological reports adhere to best practices and are written to ensure comprehension by both parents and teachers. This study explored the potential differences…

Recent research in multidimensional item response theory has introduced within-item interaction effects between latent dimensions in the prediction of item responses. The objective of this study was to extend this research to bifactor models to include an interaction effect between the general and specific latent variables measured by an item.…

Psychologists have become increasingly interested in the intra-individual variability of psychological measures as a meaningful distinguishing characteristic of persons. Assessments of intra-individual variability are frequently based on the repeated administration of self-report rating scale instruments, and extreme response style (ERS) has the…

The present study is an examination of mental health between lesbian, gay, bisexual, queer, and questioning students at faith based colleges/universities (FBCU) and the general college/university population (GCUP), which includes mostly non-faith based colleges/universities (NFBCU) as well as some FBCU. Current literature on this topic is sparse.…