This document summarizes different perspectives on managerial roles and effectiveness. It discusses managerial roles according to theorists like Fred Luthans, Henry Mintzberg, and Peter Drucker. Mintzberg identified three main roles: decisional, interpersonal, and informational. The decisional role includes activities like entrepreneurship, disturbance handling, and resource allocation. The interpersonal role focuses on leadership, liaison work, and figureheading. The informational role encompasses monitoring, disseminating information, and acting as a spokesperson. The document also compares effectiveness and efficiency, with efficiency focusing on doing things right and effectiveness on doing the right things. It provides tips for selecting good managers, like relying on qualifications, recommendations, and