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New insights reveal how social dynamics drove the rise of agriculture
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New insights reveal how social dynamics drove the rise of agriculture
by Sophie Jenkins
London, UK (SPX) Apr 01, 2025

A groundbreaking study featured in the journal Proceedings of the National Academy of Sciences (PNAS) reexamines the long-held belief that environmental changes solely sparked the dawn of agriculture. Instead, it emphasizes the central role human interactions played in humanity's shift from foraging to farming roughly 12,000 years ago.

For generations, theories about this pivotal transformation focused on external drivers such as climate shifts, the availability of fertile lands, or increased rainfall. Books like Sapiens by Yuval Noah Harari have popularized these perspectives. But now, researchers from the University of Bath, the Max Planck Institute for Evolutionary Anthropology, the University of Cambridge, UCL, and other institutions argue for a more human-centered explanation.

The team developed a novel mathematical framework inspired by predator-prey models to explore how early hunter-gatherers and agriculturalists influenced one another's growth, survival, and cultural development. Their analysis, rooted in population patterns drawn from radiocarbon dating, illustrates that early farmers did not simply occupy fertile lands vacated by foragers. Instead, farming societies expanded through deliberate migration, competition, and cultural integration.

"Our study provides a new perspective on prehistoric societies. By statistically fitting our theoretical predator-prey model to observed population dynamics inferred from radiocarbon dates, we explored how population growth shaped history and uncovered interesting patterns-such as how the spread of farming, whether by land or sea, influenced interactions between different groups. More importantly, our model also highlights the role of migration and cultural mixing in the rise of farming," said Dr Javier Rivas of the University of Bath's Department of Economics.

Rather than passive adaptation to a changing world, the research reveals early humans actively shaped the path toward agriculture. Intergroup competition and demographic pressures influenced where and how farming took root.

Looking ahead, the researchers plan to refine their model by expanding its scope and incorporating more variables to apply it across broader geographical areas.

"We hope the methods we've developed will eventually become a standard tool for understanding how populations interacted in the past, offering fresh insight into other key moments in history, not just the shift to farming," Dr Rivas added.

Research Report:Demographic interactions between the last hunter-gatherers and the first farmers

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