We have, however, further seen that the phenomena are in reality too complex to be settled by the usual crude method of attempting to discover quantitative differences in the sexual impulse. We more nearly get to the bottom of the question by a more analytic method, breaking up our mass of facts into groups. In this way we find that there are certain well-marked characteristics by which the sexual impulse in women differs from the same impulse in men: 1. It shows greater apparent passivity. 2. It is more complex, less apt to appear spontaneously, and more often needing to be aroused, while the sexual orgasm develops more slowly than in men. 3. It tends to become stronger after sexual relationships are established. 4. The threshold of excess is less easily reached than in men. 5. The sexual sphere is larger and more diffused. 6. There is a more marked tendency to periodicity in the spontaneous manifestations of sexual desire. 7. Largely as a result of these characteristics, the sexual impulse shows a greater range of variation in women than in men, both as between woman and woman and in the same woman at different periods.
It may be added that a proper understanding of these sexual differences in men and women is of great importance, both in the practical management of sexual hygiene and in the comprehension of those wider psychological characteristics by which women differ from men.