Robin Dunbar is the world-renowned psychologist and author who famously discovered Dunbar's number: how our capacity for friendship is limited to around 150 people. In Friends, he looks at friendship in the round, at the way different types of friendship and family relationships intersect, at the complex of psychological and behavioural mechanisms that underpin friendships and make them possible - and at just how complicated the business of making and keeping friends actually is. From back cover.
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