This article explores the literature on intergenerational relationships within psychological and sociological disciplines. After a brief description of the different meanings of the term ‘generation’, two theoretical perspectives are discussed: Mannheim's theory of generations and Bengston and colleagues' theory of intergenerational solidarity. Particular attention is given to the process of intergenerational transmission. This is followed by a rereading of the concept of generation in light of the relational–intergenerational perspective. This perspective attempts to consider together family and social generations, taken to be interdependent. The application of this perspective to the transition to adulthood is crucial to an understanding of intergenerational dynamics, whether in the family or in the community. It concludes with reflections on the meaning of the intergenerational transmission as seen from the relational-intergenerational perspective and recent research findings.