Fred E. Fiedler’s contingency theory of leadership effectiveness was based on studies of a wide range of group effectiveness, and concentrated on the relationship between leadership and organizational performance. This is one of the earliest situation-contingent leadership theories given by Fiedler. According to him, if an organization attempts to achieve group effectiveness through leadership, then there is a need to assess the leader according to an underlying trait, assess the situation faced by the leader, and construct a proper match between the two.