Outgrowth of the British Academy Centenary Research Project ("Lucy Project"), a multidisplinary research project conducted from 2003 to 2010. (Preface and dust jacket copy)

Includes bibliographical references and index.

Mind the gap : or Why humans aren't just great apes / R.I.M. Dunbar -- The social brain and the shape of the Palaeolithic / Clive Gamble, J.A.J. Gowlett, and R.I.M. Dunbar -- The social brain hypothesis : an evolutionary perspective on the neurobiology of social behavior / Susanne Shultz and R.I.M. Dunbar -- Hominin cognitive evolution : identifying patterns and processes in the fossil and archaeological record / Susanne Shultz, Emma Nelson, and R.I.M. Dunbar -- The identity model : a theory to access visual display and hominin cognition within the Palaeolithic / James Cole -- The longest transition or multiple revolutions? : curves and steps in the record of human origins / J.A.J. Gowlett -- Relationships and the social brain : integrating psychological and evolutionary perspectives / Alistair Sutcliffe, R.I.M. Dunbar, Jens Binder, and Holly Arrow -- Close social relationships : an evolutionary perspective / S.B.G. Roberts, Holly Arrow, Julia Lehmann, and R.I.M. Dunbar -- The brain opioid theory of social attachment : a review of the evidence / A.J. Machin and R.I.M. Dunbar -- Time as an ecological constraint / R.I.M. Dunbar, A.H. Korstjens, and Julia Lehmann -- Unravelling the function of community-level organization / Julia Lehmann, Phyllis Lee, and R.I.M. Dunbar -- Fireside chat : the impact of fire on hominin socioecology / R.I.M. Dunbar and J.A.J. Gowlett -- Bridging the bonding gap : the transition from primates to humans / R.I.M. Dunbar -- Evolution of primate social systems : implications for hominin social evolution / Susanne Shultz, Christopher Opie, Emma Nelson, Q.D. Atkinson, and R.I.M. Dunbar -- The road to modern humans : time budgets, fission-fusion sociality, kinship and the division of labour in hominin evolution / R.I.M. Dunbar, Julia Lehmann, Amanda H. Korstjens, and J.A.J. Gowlett -- The costs of being a high-latitude hominin / Eiluned Pearce, Andrew Shuttleworth, Matt Grove, and R.H. Layton -- Communities on the edge of civilization / Fiona Coward and R.I.M. Dunbar -- The elements of design form in Acheulean bifaces : modes, modalities, rules and language / J.A.J. Gowlett -- Why only humans have language / R.I.M. Dunbar -- Social origins : sharing, exchange, and kinship / Alan Barnard -- Big brains, small worlds : material culture and the evolution of mind / Fiona Coward and Clive Gamble.