The evaluation of behavioural styles plays a crucial role in the selection process of effective leaders including CEOs and top executives. In the 21st century ― and especially for the future―we want leaders who can manage people, engage the workforce, and inspire innovation and collaboration. Therefore, there is an urgent need to understand leadership behaviours, because it influences the effectiveness of a leader. Leaders make business decisions and implement strategies based on their innate drives and their behavioural style. Our priorities also affect how we react to the people we work with. It is no longer sufficient to select leaders based on their prior successes or capability alone. It is true that previous successes and experience remain vital, but more is required from today’s leaders.