This new text provides a state-of the-art introduction to educational and psychological testing and measurement theory that reflects many intellectual developments of the past two decades. The book introduces psychometric theory using a latent variable modeling (LVM) framework and emphasizes interval estimation throughout, so as to better prepare readers for studying more advanced topics later in their careers. Featuring numerous examples, it presents an applied approach to conducting testing and measurement in the behavioral, social, and educational sciences. Readers will find numerous tips on how to use test theory in today's actual testing situations. To reflect the growing use of statistical software in psychometrics, the authors introduce the use of Mplus after the first few chapters. IBM SPSS, SAS, and R are also featured in several chapters. Software codes and associated outputs are reviewed throughout to enhance comprehension. Essentially all of the data used in the book are available on the website. In addition instructors will find helpful PowerPoint lecture slides and questions and problems for each chapter. The authors rely on LVM when discussing fundamental concepts such as exploratory and confirmatory factor analysis, test theory, generalizability theory, reliability and validity, interval estimation, nonlinear factor analysis, generalized linear modeling, and item response theory. The varied applications make this book a valuable tool for those in the behavioral, social, educational, and biomedical disciplines, as well as in business, economics, and marketing. A brief introduction to R is also provided. Intended as a text for advanced undergraduate and/or graduate courses in psychometrics, testing and measurement, measurement theory, psychological testing, and/or educational and/or psychological measurement taught in departments of psychology, education, human development, epidemiology, business, and marketing, it will also appeal to researchers in these disciplines. Prerequisites include an introduction to statistics with exposure to regression analysis and ANOVA. Familiarity with SPSS, SAS, STATA, or R is also beneficial. As a whole, the book provides an invaluable introduction to measurement and test theory to those with limited or no familiarity with the mathematical and statistical procedures involved in measurement and testing.

PSYCHOLOGICAL TESTING: PRINCIPLES, APPLICATIONS, AND ISSUES, Ninth Edition explains the fundamentals of psychological testing, their important applications, and the controversies that emerge from those applications in clinical, education, industrial, and legal settings. Kaplan and Saccuzzo's engaging and thorough text demonstrates how psychological tests are constructed and used, both in a professional setting and in everyday lives. Part I focuses on the core concepts that affect the evaluation of all tests. Part II discusses the major types of psychological tests, while Part III looks at present-day issues affecting testing such as stereotype threat, bias, laws, and ethics. A multitude of test profiles and sample items illustrate how psychological testing is used and reported. Real-life case studies demonstrate the uses and misuses of psychological testing, while "Technical Example" boxes help you understand complex statistical concepts.

A Single Cohesive Framework of Tools and Procedures for Psychometrics and Assessment Bayesian Psychometric Modeling presents a unified Bayesian approach across traditionally separate families of psychometric models. It shows that Bayesian techniques, as alternatives to conventional approaches, offer distinct and profound advantages in achieving many goals of psychometrics. Adopting a Bayesian approach can aid in unifying seemingly disparate-and sometimes conflicting-ideas and activities in psychometrics. This book explains both how to perform psychometrics using Bayesian methods and why many of the activities in psychometrics align with Bayesian thinking. The first part of the book introduces foundational principles and statistical models, including conceptual issues, normal distribution models, Markov chain Monte Carlo estimation, and regression. Focusing more directly on psychometrics, the second part covers popular psychometric models, including classical test theory, factor analysis, item response theory, latent class analysis, and Bayesian networks. Throughout the book, procedures are illustrated using examples primarily from educational assessments. A supplementary website provides the datasets, WinBUGS code, R code, and Netica files used in the examples.

The book is designed primarily for graduate students (or advanced undergraduates) who are learning psychometrics, as well as professionals in the field who need a reference for use in their practice. We would assume that users have some basic knowledge of using SAS to read data and conduct basic analyses (e.g., descriptive statistics, frequency distributions). In addition, the reader should be familiar with basic statistical concepts such as descriptive statistics (e.g., mean, median, variance, standard deviation), percentiles and the rudiments of hypothesis testing. They should also have a passing familiarity with issues in psychometrics such as reliability, validity and test/survey scoring. The authors do not assume any more than basic familiarity with these issues, and devote a portion of each chapter (as well as the entire first chapter) to reviewing many of these basic ideas for those not familiar with them. This book will be useful either as a primary text for a course on applied measurement where SAS is the main platform for instruction, or as a supplement to a more theoretical text. The readership will include graduate students, faculty members, data analysts and psychometricians responsible for analysis of survey response data, as well as educational and psychological assessments. This book aims to provide readers with the tools necessary for assessing the psychometric qualities of educational and psychological measures as well as surveys and questionnaires. Each chapter covers an issue pertinent to psychometric and measurement practice, with an emphasis on application. Topics are briefly discussed from a theoretical/technical perspective in order to provide the reader with the background necessary to correctly use and interpret the statistical analyses that is presented subsequently. Readers are then presented with examples illustrating a particular concept (e.g., reliability). These examples include a discussion of the particular analysis, along with the SAS code necessary to conduct them. The resulting output is then discussed in detail, focusing on the interpretation of the results. Finally, examples of how these results might be written up is also included in the text. This mixture of theory with examples of actual practice will serve the reader both as a pedagogical tool and as a reference work.

Choice Recommended Read Psychological research into human intelligence and abilities presents us with a number of difficult questions: Are human abilities explained by a single core intelligence or by multiple intelligences? How should abilities be assessed? With tests unlike the problems which people normally have to solve, or with practical problems closer to those encountered in life, school and work? Do ability tests predict how a person will behave? If so, can they predict whether a person will succeed at school and at work? Intelligence and Human Abilities critically evaluates research evidence from the past 100 years to consider these and other issues. It shows that, despite the apparent contradictions in this research, the evidence in fact supports one coherent model, a fact which has clear implications for researchers, educators and test-users. This clear and engaging text provides an up-to-date evaluation of what the empirical evidence tells us about the number, nature and origins of human abilities. It will be essential reading for students and practitioners of psychology and education, and also for users of ability tests such as applied psychologists and personnel managers.

This book provides an up-to-date review of commonly undertaken methodological and statistical practices that are based partially in sound scientific rationale and partially in unfounded lore. Some examples of these methodological urban legends are characterized by manuscript critiques such as: (a) your self-report measures suffer from common method bias; (b) your item-to-subject ratios are too low; (c) you can t generalize these findings to the real world; or (d) your effect sizes are too low.

What do these critiques mean, and what is their historical basis? More Statistical and Methodological Myths and Urban Legends catalogs several of these quirky practices and outlines proper research techniques. Topics covered include sample size requirements, missing data bias in correlation matrices, negative wording in survey research, and much more."

Tests of diagrammatic reasoning feature in the recruitment process for professional services, finance, accountancy, graduate traineeships, architecture, engineering and even the UKCAT. Doing well in these common assessments is largely down to practice. How to Pass Diagrammatic Reasoning Tests contains over 300 practice questions involving a series of pictorial or diagrammatic questions with little or no resort to words or numbers. Each chapter is organised into blocks of warm up questions with a mini test at the end. The questions get progressively harder. Covering abstract reasoning, input type diagrammatic reasoning and conceptual and spatial reasoning tests, How to Pass Diagrammatic Reasoning Tests will help you to achieve a high score and get though to the next stage of the recruitment process.

Assessment of mental health, religion and culture: The development and examination of psychometric measures focuses on questionnaires that are of practical value for researchers interested in examining the relationship between the constructs of mental health, religion, and culture. Three particular areas of development and evaluation are represented within this volume: firstly, the psychometric properties of recently developed new questionnaires; secondly, the psychometric properties of established questionnaires that have been translated into other languages; and thirdly, the psychometric properties of questionnaires employed in various cultural contexts and religious samples. The research in this book is authored by a wide range of international scholars working on diverse samples and in a variety of different cultures. In doing so, the book facilitates future research in the area of mental health, religion, and culture. This book was originally published as two special issues of Mental Health, Religion & Culture.

Numeracy tests are increasingly a part of the recruitment process, but taking numeracy tests is something most of us dread, let alone practise.

"Brilliant Numeracy Tests" will give you all the practise you need. You'll gain experience with realistic practice questions and answers, become familiar with all the common tests, both general and organization-specific, and feel comfortable with a range of difficulty levels.

Written by an experienced psychologist who has designed and administered numeracy tests, you'll find a variety of effective strategies, tactics and tips to achieve peak performance.

Companion website: www.pearson-books.com/numeracyandverbaltests

The definitive resource for psychological diagnosis, updated with the latest research Adult Psychopathology and Diagnosis offers comprehensive coverage of psychological disorders and presents a balanced integration of empirical data and diagnostic criteria to aid in understanding diagnosis and psychopathology. Designed to support students of clinical psychology, counseling, nursing, and social work, this invaluable resource merges overviews, case studies, and examination of individual disorders in an accessible format that facilitates easy reference. Broad-reaching issues such as interviewing and cross cultural considerations are discussed in detail for their effect on the clinical presentation of every disorder and case studies illustrate how diagnoses are reached and applied in real-world clinical settings. Updated to reflect the latest advances in research, this new 8th Edition includes new coverage of personality disorders, a new chapter on the Research Diagnostic Criteria (RDOC), new authors for a number of the chapters, and contributions by leaders in the field to provide students with exceptional insight into psychopathology and diagnosis. Get up to date on the latest research based on DSM-5 categorization Easily locate and retain information with a proven chapter structure Examine a new alternative DSM-5 model for personality disorders Include cross-cultural considerations throughout investigation and diagnosis In clarifying DSM-5 classification and diagnostic guidelines while integrating leading-edge research with a case study approach, this book provides the most complete, most up-to-date reference for graduate students and practitioners alike. Thorough coverage of essential topics such as neurological foundations, dual diagnoses, eating disorders, anxiety, gender issues and more provides both theoretical insight as well as practical understanding, making Adult Psychopathology and Diagnosis once again a top resource for the field.

Includes online access to new, customizable WJ IV score tables, graphs, and forms for clinicians Woodcock-Johnson IV: Reports, Recommendations, and Strategies offers psychologists, clinicians, and educators an essential resource for preparing and writing psychological and educational reports after administering the Woodcock-Johnson IV. Written by Drs. Nancy Mather and Lynne E. Jaffe, this text enhances comprehension and use of this instrument and its many interpretive features. This book offers helpful information for understanding and using the WJ IV scores, provides tips to facilitate interpretation of test results, and includes sample diagnostic reports of students with various educational needs from kindergarten to the postsecondary level. The book also provides a wide variety of recommendations for cognitive abilities; oral language; and the achievement areas of reading, written language, and mathematics. It also provides guidelines for evaluators and recommendations focused on special populations, such as sensory impairments, autism, English Language Learners, and gifted and twice exceptional students, as well as recommendations for the use of assistive technology. The final section provides descriptions of the academic and behavioral strategies mentioned in the reports and recommendations. The unique access code included with each book allows access to downloadable, easy-to-customize score tables, graphs, and forms. This essential guide * Facilitates the use and interpretation of the WJ IV Tests of Cognitive Abilities, Tests of Oral Language, and Tests of Achievement * Explains scores and various interpretive features * Offers a variety of types of diagnostic reports * Provides a wide variety of educational recommendations and evidence-based strategies

Tests and Assessments in Counseling provides students with current information on assessment tools and techniques through detailed case scenarios and vignettes. Going beyond basic information about a multitude of assessments, the authors focus on the use of instruments in individual cases to allow readers to more fully grasp the integral relationship between tests and assessment data and the counseling process. Chapters guide students through choosing the most effective assessment tool, successfully administering the assessment, and making meaningful and useful results of the data with the client. Test questions are also included at the end of each chapter.

This is a reprint of the orginal book released in 1968. Our primary goal in this book is to sharpen the skill, sophistication, and in- tuition of the reader in the interpretation of mental test data, and in the construction and use of mental tests both as instruments of psychological theory and as tools in the practical problems of selection, evaluation, and guidance. We seek to do this by exposing the reader to some psychologically meaningful statistical theories of mental test scores. Although this book is organized in terms of test-score theories and models, the practical applications and limitations of each model studied receive substantial emphasis, and these discussions are presented in as nontechnical a manner as we have found possible. Since this book catalogues a host of test theory models and formulas, it may serve as a reference handbook. Also, for a limited group of specialists, this book aims to provide a more rigorous foundation for further theoretical research than has heretofore been available.One aim of this book is to present statements of the assumptions, together with derivations of the implications, of a selected group of statistical models that the authors believe to be useful as guides in the practices of test construction and utilization. With few exceptions we have given a complete proof for each major result presented in the book. In many cases these proofs are simpler, more complete, and more illuminating than those originally offered. When we have omitted proofs or parts of proofs, we have generally provided a reference containing the omitted argument. We have left some proofs as exercises for the reader, but only when the general method of proof has already been demonstrated. At times we have proved only special cases of more generally stated theorems, when the general proof affords no additional insight into the problem and yet is substantially more complex mathematically.

Psychological Testing: A Practical Introduction 4e offers students of psychology and allied disciplines a comprehensive survey of psychometric principles and tests in the major categories of applied assessment. Coverage includes test norms, reliability, validity, and test development, with an entirely new chapter on test fairness and bias. Chapters on assessment of cognitive ability, achievement, personality, clinical instruments, and attitudes provide up-to-date examples of the widely used tests in each category. Recognizing that active engagement maximizes learning, the text presents as an active learning device rather than a reference work. Extensive use of chapter objectives, key point and end-of-chapter summaries, practice problems, applied scenarios, internet-based resources, and statistics skills review enable students to engage more fully with the material for a deeper understanding. Written in a clear, reader-friendly style, the text approaches challenging topics by balancing technical rigor with relatable examples of contemporary applications.

A comprehensive collection of new work examining the relationship between educational measurement concepts and the assessment of student learning in classrooms. Adapts existing concepts in measurement and information theory to fit the specific context of classroom learning and assessment. Serves as a companion volume to the work and goals of the NCME's Classroom Assessment Task Force, which is working to advance classroom assessment research within the field of educational measurement.

This popular text introduces the reader to all aspects of psychometric assessment, including its history, the construction and administration of traditional tests, and the latest techniques for psychometric assessment online. Rust, Kosinski, and Stillwell begin with a comprehensive introduction to the increased sophistication in psychometric methods and regulation that took place during the 20th century, including the many benefits to governments, businesses, and customers. In this new edition, the authors explore the increasing influence of the internet, wherein everything we do on the internet is available for psychometric analysis, often by AI systems operating at scale and in real time. The intended and unintended consequences of this paradigm shift are examined in detail, and key controversies, such as privacy and the psychographic microtargeting of online messages, are addressed. Furthermore, this new edition includes brand-new chapters on item response theory, computer adaptive testing, and the psychometric analysis of the digital traces we all leave online. Modern Psychometrics combines an up-to-date scientific approach with full consideration of the political and ethical issues involved in the implementation of psychometric testing in today's society. It will be invaluable to both undergraduate and postgraduate students, as well as practitioners who are seeking an introduction to modern psychometric methods.

Forensic mental health assessment (FMHA) has grown into a specialization informed by research and professional guidelines. This series presents up-to-date information on the most important and frequently conducted forms of FMHA. The 21 topical volumes address best approaches to practice for particular types of evaluation in the criminal, civil and juvenile/family areas. Each volume contains a thorough discussion of the relevant legal and psychological concepts, followed by a step-by-step description of the assessment process from preparing for the evaluation to writing the report and testifying in court. Volumes include the following helpful features: - Boxes that zero in on important information for use in evaluations - Tips for best practice and cautions against common pitfalls - Highlighting of relevant case law and statutes - Separate list of assessment tools for easy reference - Helpful glossary of key terms for the particular topic In making recommendations for best practice, authors consider empirical support, legal relevance, and consistency with ethical and professional standards. These volumes offer invaluable guidance for anyone involved in conducting or using forensic evaluations.

This popular text introduces the reader to all aspects of psychometric assessment, including its history, the construction and administration of traditional tests, and the latest techniques for psychometric assessment online. Rust, Kosinski, and Stillwell begin with a comprehensive introduction to the increased sophistication in psychometric methods and regulation that took place during the 20th century, including the many benefits to governments, businesses, and customers. In this new edition, the authors explore the increasing influence of the internet, wherein everything we do on the internet is available for psychometric analysis, often by AI systems operating at scale and in real time. The intended and unintended consequences of this paradigm shift are examined in detail, and key controversies, such as privacy and the psychographic microtargeting of online messages, are addressed. Furthermore, this new edition includes brand-new chapters on item response theory, computer adaptive testing, and the psychometric analysis of the digital traces we all leave online. Modern Psychometrics combines an up-to-date scientific approach with full consideration of the political and ethical issues involved in the implementation of psychometric testing in today's society. It will be invaluable to both undergraduate and postgraduate students, as well as practitioners who are seeking an introduction to modern psychometric methods.

IQ tests are now encountered in recruitment for the government, the armed forces, education, industry and commerce. Test Your IQ contains 400 IQ test questions written and compiled by IQ-test experts, complete with a guide to assessing individual performance. Working through the questions can help anyone improve their vocabulary and develop powers of calculation and logical reasoning. By studying the different types of test, and recognizing the different types of question, readers can improve their test scores and increase their IQ rating. Test your IQ is invaluable to those who have to take an IQ test, but it's also great fun for anyone who likes to stretch their mind for their own entertainment. Online supporting resources for this book include downloadable self test examples.

This textbook describes the broadening methodology spectrum of psychological measurement in order to meet the statistical needs of a modern psychologist. The way statistics is used, and maybe even perceived, in psychology has drastically changed over the last few years; computationally as well as methodologically. R has taken the field of psychology by storm, to the point that it can now safely be considered the lingua franca for statistical data analysis in psychology. The goal of this book is to give the reader a starting point when analyzing data using a particular method, including advanced versions, and to hopefully motivate him or her to delve deeper into additional literature on the method. Beginning with one of the oldest psychometric model formulations, the true score model, Mair devotes the early chapters to exploring confirmatory factor analysis, modern test theory, and a sequence of multivariate exploratory method. Subsequent chapters present special techniques useful for modern psychological applications including correlation networks, sophisticated parametric clustering techniques, longitudinal measurements on a single participant, and functional magnetic resonance imaging (fMRI) data. In addition to using real-life data sets to demonstrate each method, the book also reports each method in three parts-- first describing when and why to apply it, then how to compute the method in R, and finally how to present, visualize, and interpret the results. Requiring a basic knowledge of statistical methods and R software, but written in a casual tone, this text is ideal for graduate students in psychology. Relevant courses include methods of scaling, latent variable modeling, psychometrics for graduate students in Psychology, and multivariate methods in the social sciences.

"Psychological Testing by Theresa J. B. Kline is an accessible, easy-to-read book that effectively communicates the current concepts, trends, and controversies in the field of psychological testing. Readers are provided with an in-depth analysis of psychometrics in a format that will keep their attention and that they will be able to relate to the significance of psychological testing across numerous areas such as schools, businesses, clinical settings, military, or government." -Todd L. Chmielewski, PsycCRITIQUES, December 7, 2005 VOL. 50, NO. 49, ARTICLE 12 Psychological Testing: A Practical Approach to Design and Evaluation offers a fresh and innovative approach to students and faculty in the fields of testing, measurement, psychometrics, research design, and related areas of study. Author Theresa J.B. Kline guides readers through the process of designing and evaluating a test, while ensuring that the test meets the highest professional standards. The author uses simple, clear examples throughout and fully details the required statistical analyses. Topics include-but are not limited to-design of item stems and responses; sampling strategies; classical and modern test theory; IRT program examples; reliability of tests and raters; validation using content, criterion-related, and factor analytic approaches; test and item bias; and professional and ethical issues in testing. With the student in mind, Kline has created features that ease them into more difficult ideas, always stressing the practical use of theoretical concepts. Features include A step-by-step approach to designing a test, including construct identification, construct operationalization, collecting data, item assessment, and reliability and validity techniques Examples of data analyses with printouts and interpretation Up-to-date coverage of psychometric topics, such as difference scores, change scores, translation, computer adaptive testing, reliability and validity generalization, professional and ethical guidelines, and references IRT program outputs (dichotomous and multiple response) Coverage of traditional topics in the context of how they would be used, such as standard errors and confidence intervals Sampling approaches and their strengths and weaknesses, as well as response rates and missing data management Psychological Testing is perfectly suited as a main text for upper-level undergraduate and graduate Testing or Psychometrics courses in departments of Psychology, Education, Sociology, Management, and in the Human Services disciplines. Professional researchers, educators, and consultants will also want to add this to their libraries for up-to-date coverage of test design and evaluation techniques. "Professor Kline's attempts to de-mystify complex measurement concepts are beautifully simplified and illustrated in her countless illustrations of practical and relevant problems for the mathematically-challenged student. This book is also a must-have for those who simply do not have the desire for the theoretical jargon used in similar textbooks but are interested in the important conceptual and practical aspects of measurement as they apply in their disciplines." -Arturo Olivarez, Jr., Texas Tech University "Kline's Psychological Testing provides a well-written treatment of the critical issues in designing and evaluating psychometric instruments. This book will be very useful to advanced undergraduate students, graduate students, and researchers." -Richard Block, Montana State University

Quickly acquire the knowledge and skills you need to confidently administer, score, and interpret the Conners 3, Conners CBRS, and Conners EC

The Conners 3rd Edition (Conners 3), Conners Comprehensive Behavior Rating Scales (Conners CBRS), and Conners Early Childhood (Conners EC) are sophisticated tools for the assessment of behavioral, emotional, social, academic, and developmental issues in children and adolescents. Authored by Elizabeth Sparrow, who was mentored by Keith Conners and worked closely with him on the Conners assessments, "Essentials of Conners Behavior Assessments" offers a comprehensive and user-friendly guide for mental health professionals who need to understand and apply results from these Conners assessments in educational, clinical, and research settings.

Like all the volumes in the "Essentials of Psychological Assessment" series, this book is designed to help busy mental health practitioners, and those in training, quickly acquire the knowledge and skills they need to make optimal use of major psychological assessment instruments. Each chapter features numerous callout boxes highlighting key concepts, bulleted points, and extensive illustrative material, as well as test questions that help you gauge and reinforce your grasp of the information covered.

The best practical guide to the Conners 3, Conners CBRS, and Conners EC, "Essentials of Conners Behavior Assessments" provides instruction for rating scale selection, administration, scoring, and interpretation, and advanced approaches to analyzing results, integrating findings from multiple Conners assessments, and evaluating response to intervention.

The Philosophy of Quantitative Methods focuses on the conceptual foundations of research methods within the behavioral sciences. In particular, it undertakes a close philosophical examination of a variety of quantitative research methods that are prominent in (or relevant for) the conduct of research in these fields. By doing so, the deep structure of these methods is examined in order to overcome the non-critical approaches typically found in the existing literature today. In this book, Brian D. Haig focuses on the more well-known research methods such as exploratory data analysis, statistical significant testing, Bayesian confirmation theory and statistics, meta-analysis, and exploratory factor analysis. These methods are then examined with a philosophy consistent of scientific realism. In addition, each chapter provides a helpful Further Reading section in order to better assist the reader in extending their own thinking and research methods specific to their needs.

Assessing Risk: A Relational Approach offers the practitioner a novel framework for understanding the complex and subtle issues involved in assessing and managing risks related to violence and sexual offending. The authors draw on their considerable experience working with high risk individuals in assessment and treatment. They have for many years consulted to practitioners in forensic mental health services and the criminal justice system and taught renowned courses at the Tavistock and Portman NHS Foundation Trust. This book outlines a comprehensive model of risk which draws on mainstream empirical research, threat assessment, developmental psychopathology, attachment theory, and a relational model derived from psychoanalysis. The framework incorporates intrapersonal and interpersonal dimensions and is designed to enhance the reader's capacity to make a thorough risk formulation. The approach highlights the significance of childhood development in understanding violent and sexually violent acts, and the complicated interpersonal processes involved in managing individuals who have a propensity to violent enactment. These dynamic processes between people impact on risk and risk perception, and can distort judgement if not recognised and understood. Assessing Risk will be of practical use in enhancing the skills of professionals to assess and manage risk in a comprehensive and effective way, and will appeal to all those mental health and criminal justice practitioners working with risky individuals.

The purpose of this book is to present methods for developing, evaluating and maintaining rater-mediated assessment systems. Rater-mediated assessments involve ratings that are assigned by raters to persons responding to constructed-response items (e.g., written essays and teacher portfolios) and other types of performance assessments. This book addresses the following topics: (1) introduction to the principles of invariant measurement, (2) application of the principles of invariant measurement to rater-mediated assessments, (3) description of the lens model for rater judgments, (4) integration of principles of invariant measurement with the lens model of cognitive processes of raters, (5) illustration of substantive and psychometric issues related to rater-mediated assessments in terms of validity, reliability, and fairness, and (6) discussion of theoretical and practical issues related to rater-mediated assessment systems. Invariant measurement is fast becoming the dominant paradigm for assessment systems around the world, and this book provides an invaluable resource for graduate students, measurement practitioners, substantive theorists in the human sciences, and other individuals interested in invariant measurement when judgments are obtained with rating scales.