Why sociologists distrust neat labels like Generation X and Millennials
In rich countries the average gap between parents and children has stretched into the high twenties, reaching 30 years in some places, while in poorer nations it still sits in the low twenties. Yet for most of history, generation meant only family descent. Carving society into age groups with shared outlooks is a surprisingly modern habit.
The word traces to the Latin generare, to beget. It can mean a single step in a family line, roughly the 20 to 30 years it takes for children to grow up and have their own, or a cohort born around the same time who live through the same major events, like the Lost Generation or the Beat Generation. Rising familial generation length since the late eighteenth century has been linked to urbanisation, delayed first pregnancy, uncertain jobs and, especially, women's education.
Social generations only caught on in the nineteenth century. Industrialisation loosened fathers' grip on young men, who gained the mobility to defy family authority. Nationalism, a national press, shared languages and public schooling weakened local loyalties, so people began to picture themselves as members of a wider society, divisible by age.
The sociologist Karl Mannheim laid the foundations in his 1923 essay The Problem of Generations. He rejected both the positivists, like Comte, who measured change by fixed life spans, and the romantic school of Dilthey and Heidegger, which ignored social context. Being born together, he argued, matters less than meeting the same events at a similar stage of consciousness. Rapid change in youth makes a cohesive generation more likely, some cohorts never see themselves as distinct, and several sub-generations can coexist. On that view, labels such as Generation X rest mainly on American experience and travel poorly.
Historian Hans Jaeger sorts later thinking into two camps. The pulse-rate hypothesis splits a population into consecutive cohorts, each with its own peer personality, cycling through history; the best-known example, from William Strauss and Neil Howe, spawned an industry of consultants and marketers. Most social scientists reject it in favour of Mannheim's imprint hypothesis, in which particular events, like the Vietnam War or the COVID-19 pandemic, mark those who meet them young, and boundaries must be found from evidence rather than assumed.
Source: Generation
