I bought this book after an excellent Guardian Family section piece, with an interest in psychology (and psychotherapy) - I wasn't disappointed. It is beautifully written and interweaves scientific detail with a touching, at times funny and personal father's account of his own child's journey of discovery and mental growth. The level of understanding, as the previous reviewer states, is perfect for trained psychologist and layman alike and the text is written in a non-patronising and non-assuming manner. Charles Fernyhough's passion for this subject and his personal investment in this project shines through in this book and although there are times you know he wishes he could put the camera/notebook/tape recorder down and just enjoy the moment, his commitment to sharing his findings is to be applauded.