In today's business society, all organizations seek effective management. Watson (1930) mentions that the exceptional leader is an essential element of any organization. In this essay, he will clearly describe the meaning of “effective leadership”. In addition, it will be a question, through the perspective of sociology and psychology, of explaining which factors could positively affect or improve effective leadership. In ancient society, the leader would generally be defined as those people who have the ability to change the dominant social environment, as well as a "Great Man" at the same time. Carneiro (1981) cited the great man theory which states that whether in terms of wisdom, intelligence, charm, or political skills, the great man is always relatively better than ordinary people. He also mentions that the leader is the product of his society and that his successes would be impossible without the conditions of the dominant social environment. Therefore, the characteristics and skills of the leader will be different in each generation. Bhugra (2013) defines that a leader is someone who holds a dominant or superior position in his or her field, is able to exercise excellent control over members and is also able to motivate other individuals to become better. According to the Meta analysis of Judge, Bono, Lilies, and Gerhardt (2002), today's leaders generally exhibit the characteristics of the "big five": extraversion, agreeableness, conscientiousness, emotional stability, and the opening. Their analysis showed that the overall correlation is 0.58 and that there is a fairly strong positive relationship between the big five factors and effective leadership. As the Great Man theory says, in ancient society, people generally believe that all leaders and their abilities...... middle of paper ... his image as a leader, which can help them become more convincing in his work. Second, the leader must always know what the needs of the members are, in order to create the most effective and appropriate leadership style. On a social level, the essays mention the absolute necessity for the leader to analyze the external environment of the industry. This can allow the leader to access the risk of their decision. Moreover, it can lead one’s organization to succeed. As the great man theory says, the characteristics of leadership are different in each generation. In order to achieve effective leadership, as a leader, he or she must have the courage to try and pursue transformation. Through the above psychological and social factors, identify the most appropriate and acceptable management style to create the most effective leadership.