Robin Dunbar

Clive Gamble

John Gowlett

Argues that the need for early humans to live in larger social groups and maintain social relations over greater distances drove the enlargement of the human brain and the development of the human mind.

How the Evolution of Social Life Shaped the Human Mind

Thinking Big

A closer look at social history and the growth of the human brain When and how did the brains of our hominin ancestors become human minds? When and why did our capacity for language, art, music and dance evolve? This pathbreaking book proposes that it was the need for early humans to live in ever-larger social groups over greater distances—the ability to “think big”—that drove the enlargement of the human brain and the development of the human mind. This social brain hypothesis, put forward by evolutionary psychologists such as Robin Dunbar, can be tested against archaeological and fossil evidence. The conclusions here—the fruits of over seven years of research—build on the insight that modern humans live in effective social groups of about 150 (so-called “Dunbar’s number”), some three times the size of those of apes and our early ancestors. We live in a world dominated by social networking. Yet our virtual contact lists, whether on Facebook or Twitter, are on average no bigger than Dunbar’s number.

Robert E. M. Hedges

Presents research contributions drawing on radiocarbon dates produced by the Oxford Radiocarbon Accelerator.

Research Contributions Drawing on Radiocarbon Dates Produced by the Oxford Radiocarbon Accelerator Based on Papers Presented at the SERC Sponsored Conference 'Results and Prospects of Accelerator Dating' Held in Oxford on October 1985

Archaeological Results from Accelerator Dating

A closer look at genealogy, incorporating how biological, anthropological, and technical factors can influence human lives We are at a pivotal moment in understanding our remote ancestry and its implications for how we live today. The barriers to what we can know about our distant relatives have been falling as a result of scientific advance, such as decoding the genomes of humans and Neanderthals, and bringing together different perspectives to answer common questions. These collaborations have brought new knowledge and suggested fresh concepts to examine. The results have shaken the old certainties. The results are profound; not just for the study of the past but for appreciating why we conduct our social lives in ways, and at scales, that are familiar to all of us. But such basic familiarity raises a dilemma. When surrounded by the myriad technical and cultural innovations that support our global, urbanized lifestyles we can lose sight of the small social worlds we actually inhabit and that can be traced deep into our ancestry. So why do we need art, religion, music, kinship, myths, and all the other facets of our over-active imaginations if the reality of our effective social worlds is set by a limit of some one hundred and fifty partners (Dunbar’s number) made of family, friends, and useful acquaintances? How could such a social community lead to a city the size of London or a country as large as China? Do we really carry our hominin past into our human present? It is these small worlds, and the link they allow to the study of the past that forms the central point in this book.

John Gowlett

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