The Psychology of Sex- V.3
STUDIES? ? IN THE? ? PSYCHOLOGY OF SEX
ANALYSIS OF THE SEXUAL IMPULSE? LOVE AND PAIN? THE SEXUAL IMPULSE
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 scientific 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 first study in the
volume, that our knowledge of the physiological mechanism of the sexual instin ct
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 field; 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.