This is an excellent review of a wide range of research which has helped us to recognise that infants are much more than just information processors and that what enables them to be what they are is their immersion in intense and intimate relationships. The story of what research has revealed is told in a very engaging, narrative style which acknowledges the author's own personal interests, as a psychologist but also as a mother. By bringing together the critical, analytical perspective of a research psychologist and the direct emotional, affective experiences of a mother's engagement with her children, she is able to show just how important relationships are in shaping a child's entry into social processes. I thoroughly enjoyed reading this book and learned a lot from it but I wonder whether the title should really be 'How infants know people' - there are still strong arguments for the claim that infants do not 'know minds', nor do they need to be aware of any such abstract concept in order to be able to engage with other people - and not just with their minds.