Cluster analysis is a multivariate classification technique that allows for identification of homogenous subgroups within diverse samples based on shared characteristics. In recent years, cluster analysis has been increasingly applied to psychological and neuropsychological variables to address a number of empirical questions. This book provides an overview of cluster analysis, including statistical and methodological considerations in its application to neurobehavioral variables. First, an introduction to cluster analysis is presented that emphasizes issues of relevance to neuropsychological research, including controversies surrounding it use. Cluster analysis is then applied to clinical disorders that do not have an associated prototypical neuropsychological profile, including traumatic brain injury, schizophrenia, and health problems associated with homelessness. In a second application, cluster analysis is used to investigate the course of normal memory development. Finally, cluster analysis is applied to classification of brain injury severity in children and adolescents who sustained traumatic brain injury.

This book provides a comprehensive introduction to psychological assessment and covers areas not typically addressed in existing test and measurements texts, such as neuropsychological assessment and the use of tests in forensics settings. The book introduces the vocabulary of the profession and the most basic mathematics of testing early as being fundamental to understanding the field. Numerous examples are drawn from tests that the authors have written or otherwise helped to develop, reflecting the authors' deep understanding of these tests and their familiarity with problems encountered in test development, use, and interpretation. Following the introduction of the basic areas of psychometrics, the book moves to areas of testing that represent various approaches to measuring different psychological constructs (memory, language, executive function, etc.), with emphasis on the complex issue of cultural bias in testing. Examples of existing tests are given throughout the book; however, this book is not designed to prepare students to go out and administer, score, and interpret specific psychological tests. Rather, the purpose of this book is to provide the foundational core of knowledge about tests, measurement, and assessment constructs, issues, and quantitative tools. Explains what constitutes a psychological test, how tests are developed, how they are best used, and how to evaluate their strengths and weaknesses; Describes areas of testing that represent different approaches to measuring different psychological constructs; Explains applications of psychological testing to issues in the courts; Addresses how test authors and publishers design and research tests to address the difficult and demanding issues of cultural differences in test performance and interpretation of test results.

Cluster analysis is a multivariate classification technique that allows for identification of homogenous subgroups within diverse samples based on shared characteristics. In recent years, cluster analysis has been increasingly applied to psychological and neuropsychological variables to address a number of empirical questions. This book provides an overview of cluster analysis, including statistical and methodological considerations in its application to neurobehavioral variables. First, an introduction to cluster analysis is presented that emphasizes issues of relevance to neuropsychological research, including controversies surrounding it use. Cluster analysis is then applied to clinical disorders that do not have an associated prototypical neuropsychological profile, including traumatic brain injury, schizophrenia, and health problems associated with homelessness. In a second application, cluster analysis is used to investigate the course of normal memory development. Finally, cluster analysis is applied to classification of brain injury severity in children and adolescents who sustained traumatic brain injury.

In Neuropsychological Aspects of Substance Use Disorders, internationally recognized experts provide clinicians with the most up to date information on the neuropsychology of substance use disorders based on the empirical literature. Substance use disorders continue to be a major health concern in the United States and worldwide, although their causes and effective treatments remain elusive. Research in this area has expanded dramatically over the past two decades and provided insights into psychobiological, behavioral, and genetic factors that contribute to the onset and maintenance of substance use disorders and associated neuropsychological abnormalities. This research has provided a strong empirical foundation that has direct implications for clinical neuropsychological practice and created a need to provide the practitioner with a cogent and up-to-date summary of current developments, which is the goal of this volume. Chapters in this volume are organized into three sections that are designed to provide a translational overview of basic research and treatment findings regarding addictions, neuropsychological and neurological sequalae of the most common substances of abuse, and consideration of special issues that might confound interpretation of neuropsychological test results. Section I provides an overview of addictions, including diagnoses based on the DSM-IV, as well as the most current conceptualizations of addiction from psychobiological, genetic, and behavioral and no economics perspectives, providing the reader with a broad evidence-based conceptual framework. Section II reviews the most common substances of abuse including coverage of structural and functional neuroimaging findings, epidemiological evidence, and neuropsychological sequelae. Substances included in this section represent the most commonly encountered drugs of abuse. Section III includes coverage of the number of special topics, including specific issues related to psychiatric, medical, and neurological comorbidities. Topics included in this section represent areas of common concerns faced by clinical neuropsychologists in the interpretation and application of neuropsychological test results.

This book provides a comprehensive introduction to psychological assessment and covers areas not typically addressed in existing test and measurements texts, such as neuropsychological assessment and the use of tests in forensics settings. The book introduces the vocabulary of the profession and the most basic mathematics of testing early as being fundamental to understanding the field. Numerous examples are drawn from tests that the authors have written or otherwise helped to develop, reflecting the authors' deep understanding of these tests and their familiarity with problems encountered in test development, use, and interpretation. Following the introduction of the basic areas of psychometrics, the book moves to areas of testing that represent various approaches to measuring different psychological constructs (memory, language, executive function, etc.), with emphasis on the complex issue of cultural bias in testing. Examples of existing tests are given throughout the book; however, this book is not designed to prepare students to go out and administer, score, and interpret specific psychological tests. Rather, the purpose of this book is to provide the foundational core of knowledge about tests, measurement, and assessment constructs, issues, and quantitative tools. Explains what constitutes a psychological test, how tests are developed, how they are best used, and how to evaluate their strengths and weaknesses; Describes areas of testing that represent different approaches to measuring different psychological constructs; Explains applications of psychological testing to issues in the courts; Addresses how test authors and publishers design and research tests to address the difficult and demanding issues of cultural differences in test performance and interpretation of test results.

The fourth edition of the Handbook of Psychological Assessment, provides scholarly overviews of the major areas of psychological assessment, including test development, psychometrics, technology of testing, and commonly used assessment measures. Psychological assessment is included for all ages, with new coverage encompassing ethnic minorities and the elderly. Assessment methodology discussed includes formal testing, interviewing, and observation of behavior. The handbook also discusses assessment of personality and behavior, including intelligence, aptitude, interest, achievement, personality and psychopathology. New coverage includes use of assessments in forensic applications.