The four theory of leadership was formulated after studying hundreds of leaders and the model includes four basic dimensions of effective leadership - support; interaction; facilitation; goal emphasis, and work facilitation. This model was tested as a predictor of an organization's effectiveness.
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.
The Valence Model of Leadership
The valence model of emergent leadership is based on a group-development sequence. As per the valence model, the process of emergent leadership passes through three distinct stages; Orientation, Conflict, and Emergence. Group members willingly start following and obeying the leader who has passed the "emergence threshold."
Normative leadership theories are built on moral principles and tell leaders how they ought to act. Victor Vroom formulated the normative model of leadership that specifically address leader behavior explicitly built on moral principles or norms. Normative leadership theories tell leaders how they should act to raise the moral performance inside the working group and manage their different responsibilities.
According to the three-skill approach of Katz, the individual's leadership abilities vary depending on where leaders are in a management hierarchy. The practical implication of skills approach to leadership is that leaders can improve their capabilities in leadership skills through training and experience.
Investment Theory of Creativity
Sternberg in the year 2006, proposed the investment and confluence theory focused on understanding creativity. According to the investment theory, creativity requires a confluence of six distinct but interrelated resources known as intellectual abilities, knowledge, styles of thinking, personality, motivation, and environment. It emphasizes that creativity is not about one thing, but about a system of things.
The great man theory of leadership is a 19th-century idea that states a person is either a natural-born leader or not. Some people are born with the necessary leadership attributes that help them create a great impact on society, politics, or the military. The theory focuses on identifying the innate qualities and characteristics possessed by great men.
Transactional Theory of Leadership
Transactional leadership theory is based on the concept of rewards and punishments. The transactional management approach assumes that the desires of the leader and follower are different and leaders give followers something in exchange for getting something they want. Transactional leaders expect followers to be compliant and focuses on structure, instruction, monitoring, organization, or performance to get tasks completed on time.
The Hersey and Blanchard Situational Theory model suggests that a leader must adapt his leadership style based on task and relationship behaviors appropriate to the situation. Leadership style is dependent on the maturity level and abilities of followers. Under this model, successful leadership is both task-relevant and relationship-relevant.
The cognitive resource theory states the influence of the leader's resources on his or her reaction to stress. The cognitive resources of a leader are experience, intelligence, competence, and task-relevant knowledge. Stress is common in resource managing situations, and this cognitive theory emphasizes how intelligence and experience are each best under different stress situations. This theory is the reconceptualization of the Fiedler model.
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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