CHAPTER I THE PROBLEM DEFINED What is sex? Asexual and mixed reproduction; Origin of sexual reproduction; Advantage of sex in chance of survival; Germ and body cells; Limitations of biology in social problems; Sex always present in higher animals; Sex in mammals; The sex problem in the human species; Application of laboratory method. Sex, like all complicated phenomena, defies being crowded into a simple definition. In an animal or... more...

CHAPTER I. THE MOTHER AND HER CHILD. The Child's Right to Choose Its Ancestry—How This is Effected—The Mother the Child's Supreme Parent—Motherhood and the Woman Movement—The Immense Importance of Motherhood—Infant Mortality and Its Causes—The Chief Cause in the Mother—The Need of Rest During Pregnancy—Frequency of Premature Birth—The Function of the State—Recent Advance in... more...

SEXUAL SELECTION IN MAN. The External Sensory Stimuli Affecting Selection in Man—The Four Senses Involved. Tumescence—the process by which the organism is brought into the physical and psychic state necessary to insure conjugation and detumescence—to some extent comes about through the spontaneous action of internal forces. To that extent it is analogous to the physical and psychic changes which accompany the gradual... more...

ANALYSIS OF THE SEXUAL IMPULSE. Definition of Instinct—The Sexual Impulse a Factor of the Sexual Instinct—Theory of the Sexual Impulse as an Impulse of Evacuation—The Evidence in Support of this Theory Inadequate—The Sexual Impulse to Some Extent Independent of the Sexual Glands—The Sexual Impulse in Castrated Animals and Men—The Sexual Impulse in Castrated Women, after the Menopause, and in the Congenital... more...

SEXUAL INVERSION. CHAPTER I.—INTRODUCTION. Homosexuality Among Animals—Among the Lower Human Races—The Albanians—The Greeks—The Eskimos—The Tribes of the Northwest United States—Homosexuality Among Soldiers in Europe—Indifference Frequently Manifested by European Lower Classes—Sexual Inversion at Rome—Homosexuality in Prisons—Among Men of Exceptional Intellect and Moral... more...

I. The Definition of Modesty—The Significance of Modesty—Difficulties in the Way of Its Analysis—The Varying Phenomena of Modesty Among Different Peoples and in Different Ages. Modesty, which may be provisionally defined as an almost instinctive fear prompting to concealment and usually centering around the sexual processes, while common to both sexes is more peculiarly feminine, so that it may almost be regarded as the... more...

When, in 1810, Franz Joseph Gall said: “The measure of culpability and the measure of punishment can not be determined by a study of the illegal act, but only by a study of the individual committing it,” he expressed an idea which has, in late years, come to be regarded as a trite truism. This called forth as an unavoidable consequence a more lively interest on the part of various social agencies in the personality of the criminal,... more...

SEX UNIVERSAL AND ETERNAL The fundamental basis of the universe is Sex. Sex is the fulcrum upon which our life-activities turn. It is the life of Man and of planets, and ignorance of the laws of Sex is the cause of death of both. It is the conjunction of the forces of attraction and repulsion; the positive and negative; the centripetal and centrifugal forces which hold stars and planets in their orbits—or rather, it is the two expressions... more...

ORGANIC DIFFERENCES IN THE SEXES A grand difference between plant and animal life lies in the fact that the plant is concerned chiefly with storing energy, and the animal with consuming it. The plant by a very slow process converts lifeless into living matter, expending little energy and living at a profit. The animal is unable to change lifeless into living matter, but has developed organs of locomotion, ingestion, and digestion which enable it... more...

PREFACE It has always seemed to me a particular duty of the psychologist from time to time to leave his laboratory and with his little contribution to serve the outside interests of the community. Our practical life is filled with psychological problems which have to be solved somehow, and if everything is left to commonsense and to unscientific fancies about the mind, confusion must result, and the psychologist who stands aloof will be to... more...