Ethical leadership: A review and future directions.

Brown, M. E., & Treviño, L. K. (2006). Ethical leadership: A review and future directions. The Leadership Quarterly, 17(6), 595–616. https://doi.org/10.1016/j.leaqua.2006.10.004

In this foundational literature review, Brown and Treviño synthesize the disparate research on ethical leadership to provide a cohesive definition and theoretical framework. They define ethical leadership as "the demonstration of normatively appropriate conduct through personal actions and interpersonal relationships," emphasizing the dual role of the leader as both a moral person and a moral manager. The authors distinguish ethical leadership from related constructs like transformational and authentic leadership by highlighting its specific focus on moral influence and transactional reinforcement of ethical standards. The article evaluates the antecedents of ethical leadership, such as individual personality traits and situational influences, as well as its outcomes, including increased employee job satisfaction and decreased deviance. As a highly cited seminal text, this source is essential for understanding the psychological and social learning mechanisms that underpin ethical behavior in organizations. It provides a robust conceptual map for future empirical research.