Karin Stephen (1890-1953) was a British psychoanalyst and psychologist. Originally published in 1933, this book provides a discussion of psychoanalysis aimed at 'those versed in other fields'. It was based upon a series of eight lectures delivered by Stephen to medical students at Cambridge. Although the book was written primarily for doctors, technical language is used, r are medical kwledge and experience taken for granted. This book will be of value to anyone with an interest in the development of psychoanalysis and Freudian approaches to the field.