Professor Devereux in this book has given us the credo from his many decades of researches in anthropology and psychoanalysis. His argument is: 'it is countertransference, rather than transference, which is the most crucial datum of all behavioral science, because the information derivable from transference can usually also be obtained by other means, whereas that provided by the analysis of countertransference is not … the subject most capable of manifesting scientifically exploitable behavior is the observer himself. This means that a rat experiment, an anthropological field trip or a psychoanalysis contribute more to the understanding of behavior when viewed as a source of information about the animal psychologist, the anthropologist or the