Studies in the Psychology of Sex, Volume 3
SECOND EDITION, REVISED AND ENLARGED
PREFACE TO SECOND EDITION.
This volume has been thoroughly revised for the present edition and considerably enlarged throughout, in order to
render it more accurate and more illustrative, while bringing it fairly up to date with reference to scienti?c
investigation. Numerous histories have also been added to the Appendix.
It has not been found necessary to modify the main doctrines set forth ten years ago. At the same time, however, it
may be mentioned, as regards the ?rst study in the volume, that our knowledge of the physiological mechanism of
the sexual instinct has been revolutionized during recent years. This is due to the investigations that have been
made, and the deductions that have been built up, concerning the part played by hormones, or internal secretions of
the ductless glands, in the physical production of the sexual instinct and the secondary sexual characters. The
conception of the psychology of the sexual impulse here set forth, while correlated to terms of a physical process
of tumescence and detumescence, may be said to be independent of the ultimate physiological origins of that
process. But we cannot fail to realize the bearing of physiological chemistry in this ?eld; and the doctrine of
internal secretions, since it may throw light on many complex problems presented by the sexual instinct, is full of
interest for us.
PREFACE TO FIRST EDITION.
The present volume of Studies deals with some of the most essential problems of sexual psychology. The Analysis
of the Sexual Impulse is fundamental. Unless we comprehend the exact process which is being worked out
beneath the shifting and multifold phenomena presented to us we can never hope to grasp in their true relations
any of the normal or abnormal manifestations of this instinct. I do not claim that the conception of the process here
stated is novel or original. Indeed, even since I began to work it out some years ago, various investigators in these
?elds, especially in Germany, have deprived it of any novelty it might otherwise have possessed, while at the same
time aiding me in reaching a more precise statement. This is to me a cause of satisfaction. On so fundamental a
matter I should have been sorry to ?nd myself tending to a peculiar and individual standpoint. It is a source of
grati?cation to me that the positions I have reached are those toward which current intelligent and scienti?c
opinions are tending. Any originality in my study of this problem can only lie in the bringing together of elements
from somewhat diverse ?elds. I shall be content if it is found that I have attained a fairly balanced, general, and
judicial statement of these main factors in the sexual instinct.
In the study of Love and Pain I have discussed the sources of those aberrations which are commonly called, not
altogether happily, "sadism" and "masochism." Here we are brought before the most extreme and perhaps the
most widely known group of sexual perversions. I have considered them from the medico-legal standpoint,
because that has already been done by other writers whose works are accessible. I have preferred to show how