Vroom's Expectancy Theory
The Vroom-Yetton model is designed to optimize for the current situation the leadership style for best decision-making. Its a decision model formulated with contribution from Arthur Jago on how to make group decisions. The leader must gather information from the team prior to making the decision and involves more people in the decision process.
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Hawthorne Studies - Leadership
The Hawthorne studies were conducted on workers at the Hawthorne plant of the Western Electric Company by Elton Mayo and Fritz Roethlisberger in the 1920s. This study established the behavioral change that happened due to an awareness of being observed, resulting in active compliance with the supposed wishes of researchers, because of special attention received, or positive response to the stimulus being introduced.
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University of Iowa Studies was the first leadership study to analyze leadership using scientific methodology. The study was conducted by Lewin, Lippitt, and White and worked on different styles of leadership. The studies explored three leadership styles - authoritarian, democratic, and laissez-fair leaders. This early study was very influential and established three major leadership styles.
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The ten most important qualities that define a good leader are self-awareness, interpersonal and communication skills, ethical values, organizational consciousness, self-confidence, adaptability and flexibility, imagination and creativity, focus & result-orientation, continuous self-development and accountability and ownership for his actions. These ten qualities of leadership every good leader should possess to a certain extent and must continually strive to develop them.
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The group and exchange theories of leadership are derived from social psychology. These have their roots in the exchange theory. Leaders from different kinds of relationships with various groups of subordinates. Group theories describe how leaders need to maintain their position in group dynamics.
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Leader-Participation Model provides a set of rules to determine the form and amount of participative decision making. It helps identifies different ways a decision can be made based on the degree of follower participation. It proposes a method for leaders to involve all members of the organization work together to make decisions.
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Trait theories of leadership explain the leadership traits that have been studied to determine what makes certain people great leaders. The practical application of the theory is looking at how the leader‟s behavior affects their subjects.
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Five Factors Model (FFM) also known as Five-Factor Personality Model is based on five broad personality traits which are extraversion, neuroticism, openness to experience, agreeableness, and conscientiousness represented by acronym OCEAN, these traits are often referred to as the “Big Five”.
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Substitutes for leadership theory is based on understanding the context within which leadership occurs. Different situational factors can enhance, neutralize, or substitute for leader behaviors like under certain circumstances, situational factors may substitute for leadership. These substitutes are of two types - substitutes and neutralizers. Substitutes take away from the leader's power and help group members increase their performance. Neutralizers only remove influence from the leader.
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Robert Katz identified three leadership skills called - technical skills, human skills, and conceptual skills as the basic personal skills essential for leadership. Leaders must possess these three skills that assist them in optimizing a leader's performance. Technical skills are related to the field, human skills are related to communicating with people and conceptual skills related to setting the vision.
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In this study of power, Raven identified five bases of power as coercive, reward, legitimate, referent, and expert. The 5 Types of Power can help you decide when it is appropriate to use a particular type of power in important situations. Leadership involves authority and it is very important for leaders to understand what type of power they're using.
