This edited volume provides readers with a deeper knowledge of the growth of personality assessment in North America over the past 40 years through the autobiographies of its most notable figures. Experts provide insights into their professional backgrounds, training experiences, their contributions and approaches to personality assessment, their perceptions of current trends, and their predictions about the future of the field. Each chapter explores topics of deep significance to the writer, fluidly intertwining theory and personal narrative. Beginning clinicians, scholars, and students will gain a better understanding of the major empirical advances that were made during the last generation regarding key questions about the nature of people, the structure of personality traits, and the connections between personality and mental health.