The longevity of family businesses in question.

Summary The longevity of family businesses is of interest to researchers. The contributions in this dossier shed light on the sources of this question. Emphasis is placed on the role of family dynamics in the longevity of the family firm, without neglecting the multiple ingredients that can contribute to it within the firm. Finally, emphasis is placed on the importance of methodological choices in order to understand the determinants of the longevity of firms.