With an emphasis on applying theory and research in practice, Jex and Britt explore the mechanisms that organizations use to influence employees' behavior, addressing the major motivation theories in organizational psychology.  Readers will discover how psychological models can be used to improve employee morale, productivity, and quality of service.  The focus then shifts from the individual to the group level - an important distinction given the increased reliance on teams in many organizations.  Jex and Britt identify the factors that have the greatest impact on group effectiveness and examines the dynamics underlying intergroup behavior.  Finally, they move to the organization ("macro") level, revealing a variety of ways in which organizations engage in planned change with the assistance of behavioral science knowledge. The third edition builds on the successful foundation of the first two, with unusually deep coverage of research methods, which makes this book a favorite among academics, and new coverage on work/home balance, employees over the lifespan, stress management, cross cultural and diversity issues, and the affects and management of technology .  The third edition continues to use a "levels" approach, that is, focusing on  individual-level behavior  in the first part of the book, followed by coverage of group-level behavior, and finally behavior from an organizational or "macro" perspective.