Beyond age norms: Duration as a normative structure in family formation transitions in contemporary urban China

This article establishes duration as a distinct normative temporal structure that influences life course transitions, expanding beyond the predominant focus on age norms in existing literature. Drawing on life story interviews with 55 individuals in Shenzhen, China, the study examines how duration norms – socially constructed expectations about how long particular life course stages should last – operate in the transitions from relationships to marriage and from marriage to childbearing. The findings show that duration norms exhibit three key components of social norms identified in classical theories: specific behavioural expectations, collective consensus, and sanctions for violations. Through detailed analysis of participants’ narratives, the research reveals how duration functions as a malleable yet powerful normative framework that interacts with age and sequence norms to collectively structure family formation decisions. The qualitative approach captures the lived experience of duration norms, including how they are felt, interpreted, and negotiated in everyday decision-making processes during life transitions. By establishing duration as a critical dimension of temporal norms, this research advances our understanding of how time structures social life. These findings contribute to life course theory, the sociology of time, and empirical understandings of family formation processes in contemporary urban China, demonstrating how duration norms constitute a previously undertheorised yet significant aspect of temporal regulation.