This volume provides a scholarly reference for both academicians and practitioners. The first section provides a distillation of evidence regarding the three approaches to understanding leadership. The second section blends theory and practice into one framework. A unique contribution of this section is the measure influence of gender and sex-roles in leadership. The next section describes the validity of existing leadership models in light of new research in gender and sex-roles and detailed discussions of implications of the theoretical results to varied organizations are provided. The concluding section relates past and current perspectives on leadership to issues and evolving trends.