This second edition of a book that has become a classic will be welcomed by a wide readership. It is twenty years since the first edition appeared and the developments that have taken place within the field have called for a revised and expanded text. Greater emphasis has been put on the analytic process as an interpersonal event: the older view of the analyst as mirror is difficult to sustain. A new chapter has been added and some 250 additional references to the literature have been made. The future of this book is as assured as its past.