oncepts of their followers. These leaders bridge the social and personal identification of the followers with the goals of the organisation, this way enhancing followers’ feelings of involvement, cohesiveness, commitment, potency, and performance (Shamir, House, & Arthur, 1993). Transactional leadership Before the conceptualisation of the transformational leadership, transactional contingent reinforcement was considered the main component of effective leadership. This approach is characterised by a clear set of expectations whose achievement offers recognition. In this situation, followers agree with or accept the leader either in exchange of a praise or in order to avoid disciplinary action that could be taken against them (Bass B. M., 1985). When in its more corrective form, this approach is labelled as active management by exception; in this scenario, the leader is specifying not only what is considered effective performance but also what is considered ineffective performance and is monitoring for deviances or errors, correcting them if they happen (Bass, Jung, Avolio, & Berson, 2003). Leader-Member Exchange The leader-member exchange theory was developed in several phases, firstly relying on the notion of role making, then on those of social exchange, reciprocity, and equity (Deluga, 1994). This theory entails that leaders cast role expectations on their followers and provide tangible and intangible rewards if these expectations are met. Similarly, followers also hold expectations from their leaders regarding their treatment and the rewards given if leaders’ expectations are met (Wang, Law, Hackett, Wang, & Chen, 2005). Therefore, followers are not considered passive role holders but they accept or reject and renegotiate the role that the leaders prescribed. In other words, there is a reciprocal process, a dyadic exchange, in which each of the parties brings different resources to be exchanged. Over time, the quality of a dyadic exchange changes, calling for role negotiations (Wang, Law, Hackett, Wang, & Chen, 2005). Previous empirical research & Study Hypotheses>