Proceeding of: 47th EIBA Annual Conference 2021, Madrid 10-12 December 2021Book summaries are published (linked in the URL of the publisher).The objective of this research is to determine if ethnic similarity / difference is a relevant variable in the relationship between the leader's communication style and the quality of the leader-follower relationship, in the context of Peru. Using a multidimensional model of the leader's communication style, we have identified that verbal aggressiveness and emotionality are the two dimensions that interact with the ethnic similarity/difference between the leader and the subordinate. Verbal aggressiveness intensifies his negative affect on LMX when leader and subordinate are ethnically similar. The emotionality in the communication of the leader favors the LMX with more intensity if there is an ethnic similarity. The dimensions of expressiveness, precision, questioning and manipulation of the impression of the leader's communication style are not sensitive to ethnicit
