Professionals across the behavioral and social sciences routinely rely on psychometrics to design and implement assessments. This volume brings together experts from across those professions, presenting the latest research and explaining it in reference to the accepted standards in the Standards for Educational and Psychological Testing. Each chapter will concentrates on one or more components of the test design, development, or maintenance process that details policy and psychometric considerations, best practices, and a summary of relevant research. This book is a key resource for assessment professionals and those seeking understanding of assessment outside their own field.