The aim of the paper is to develop and test a theoretical model concerning the relations among some variables of organisational design and the type and nature of the conflict in family firms. The theoretical model is developed through a variety of hypotheses which tested by means of a survey on 175 firms registered at Italian Association of Family Businesses. In particular, conflict is analysed as a dependent variable with respect of: power concentration (measured in terms of founder centrality), formal governance mechanisms and generational involvement. The study examines how these three organizational features ultimately affect the functioning of a family firm, in terms of expected effect on task, process and relationship conflict. The re...