This book constitutes a collection of articles that were written for, and recently published as, special sections in three consecutive issues of the Journal of Personality Assessment. Part I provides lucid commentaries on the current status of and future issues regarding the Rorschach and MMPI-2 and other instruments, including the Minnesota Multiphasic Personality Inventory — Adolescent (MMPI-A), the Interpersonal Adjective Scales (IAS-R), the Inventory of Interpersonal Problems — Circumplex version (IIP-C), the revised NEO Personality Inventory (NEO-PI-R), and the third edition of the Millon Clinical Multiaxial Inventory (MCMI-III). The authors not only participated in the dvelopment of the instruments, but continue to lead the research effort in their application in both clinical and research settings. Part II addresses several issues that have been recurring themes, and often topics of debate, in the research and professional literature. The contributors discuss the impact of the five-factor model on personality assessment, the issue of deception in personality assessment, and various critical issues in the measurement of mood states. Other articles focus on the integration of the MMPI-2 and Rorschach and the process that clinicians should follow when applying scientific knowledge to clinical practice. Part III is primarily devoted to overviews of several statistical methods that are employed infrequently in personality assessment research, but have great potential in contributing to the understanding of the complex data sets often encountered in the measurement and study of personality. These articles serve as both an introduction and a brief tutorial for personality researchers who are unfamiliar with the subject matter. They are valuable references that will form the basis for evaluating the appropriate use of these methods in published research in their areas of interest.