it's hard to select theories
There are lots of leadership theories and it is hard to select the most suitable ones. For example, the selected theory must be compatible with the environment, the characteristics of leaders as well as the followers. However, it is hard to achieve this condition. A theory may fit the environment but confront with a leader's personality. Also, it is common that a leader has different characteristics with his followers. In addition, it is not easy to define the personalities of the employees because they may have a number of different types of characters. Perhaps one of the three factors has the dominant position among them and has a significant influence on the development of the company. In that case, choosing the theory that is compatible to that factor may make leadership become more effective. Meanwhile, the negative affects of the leadership towards the other factors need to be treated carefully in order to reduce potential problems.
It is possible for the leader to implement more than one kind of leadership theories at one time so as to meet the above requirements. It seems common, but it may cause conflicts either. Two different kinds of theory definitely require different behaviors and skills. It's hard to balance them. When deploying two theories together, it is unavoidable these theories encounter each other and generate conflicts. In our pma, we can select different kinds of leadership theories to the CEO and the director. But I just doubt the collision between them. What's more, will the people feel comfortable even though they are affecting by two totally different leaders.