This Eighth Edition reflects the new developments within personality psychology, and gives the student a picture of the field as a cumulative, integrative science that builds on its rich past and now allows a much more coherent view of the whole functioning individual in the social world. This revision, subtitled: Toward an Integrative Science of the Person, is committed to making that integration, and its practical applications and personal relevance to everyday life, even more clear and compelling for our students. In this new edition the focus is placed on distilling how findings at each of the six major levels of analysis of personality (trait-disposition, biological, psychodynamic-motivational, behavioral-conditioning, phenomenological-humanistic, and social-cognitive) still speak to and inform each other, and how they add to the current state of the science and its continuing growth.