From these theories sociological writers put forth the conclusion that the primitive state was one of promiscuity, or, as Sir John Lubbock called it in his Origin of Civilization, one of "communism in women." Post, a German student of comparative jurisprudence, for example, summed up the theory by saying that "monogamous marriage originally emerged everywhere from pure communism in women, through the intermediate stages of limited communism in women, polyandry, and polygyny." Even Herbert Spencer in his Principles of Sociology, while he avoided accepting such an extreme theory, asserted that in the beginning sex relations were confused and unregulated, and that all forms of marriage—polyandry, polygyny, monogamy, and promiscuity— existed alongside of one another and that monogamy survived through its being the superior form.
Before giving a criticism in detail of this theory let us note whether the evidence from the lowest peoples confirms it. The lowest peoples in point of culture are not the North American Indians nor the African Negroes, but certain isolated groups that live almost in a state of nature, without any attempt to cultivate the soil or to control nature in other respects. Such are the Bushmen of South Africa, the Australian Aborigines, the Negritos of the Philippine Islands and of the Andaman Islands, the Veddahs of Ceylon, and the Fuegians of South America. Now all of these peoples, with a possible exception, practice monogamy and live in relatively stable family groups. Their monogamy, however, is not of the type which we find in patriarchal times or among civilized peoples, but is a simple pairing monogamy, husband and wife remaining together indefinitely if children are born, but if no children are born, separation may easily take place. Westermarck in his History of Human Marriage has reviewed at length all of the evidence from these lower peoples and shows undoubtedly that nothing approaching promiscuity existed among them. Promiscuity is apt to be found at a higher stage of social development, and is especially apt to be found among the nature peoples after the white man has visited them and demoralized their family life. But in all these cases the existence of promiscuity is manifestly something exceptional and abnormal. Perhaps civilized peoples such as the Romans of the decadence have more nearly approximated the condition of promiscuity than any savage people of which we have knowledge. At any rate, one must conclude that the lowest existing savages found in the nineteenth century had definite forms of family life, and that the type usually found was the simple pairing monogamy which we have just mentioned.
Objections to the Hypothesis of a Primitive State of Promiscuity.—We may now briefly sum up the main criticisms of this theory of a primitive state of promiscuity, not only as we may derive them from inductive study of the higher animals and the lower peoples, but also as we may deduce them from known psychological and biological facts or principles.
(1) In the first place, then, the animals next to man, namely, the anthropoid apes, do not show a condition of promiscuity.
(2) The evidence from the lower peoples does not show that such a condition exists or has ever existed among them.
(3) A third argument against this hypothesis may be gained from what we know of primitive economic conditions. Under the most primitive conditions, in which man had no mastery over nature, food supply was relatively scarce, and as a rule only very small groups of people could live together. The smallness of primitive groups, on account of the scarcity of food supply, would prevent anything like promiscuity on a large scale.
(4) A fourth argument of a deductive nature is that the jealousy of the male, which characterizes all higher animals and especially man, would prevent anything like the existence of sexual promiscuity. The tendency of man would have been to appropriate one or more women for himself and drive away all rivals. Long ago Darwin argued that this would prevent anything like the existence of a general state of promiscuity.
(5) A fifth argument against this theory may be got from the general biological fact that sexual promiscuity tends to pathological conditions unfavorable to fecundity, that is, fertility, or the birth of offspring. Physicians have long ago ascertained this fact, and the modern prostitute gives illustration of it by the fact that she has few or no children. Among the lower animal species, in which some degree of promiscuity obtains, moreover, powerful instincts keep the sexes apart except at the pairing season. Now, no such instincts exist in man. Promiscuity in man would, therefore, greatly lessen the birth rate, and any group that practiced it to any extent would soon be eliminated in competition with other groups that did not practice it.
(6) We have finally the general social fact that promiscuity would lead to the neglect of children. Promiscuity means that the male parent does not remain with the female parent to care for the offspring and, therefore, in the human species it would mean that the care of children would be thrown wholly upon the mother. This means that the children would have less chance of surviving. Not only would promiscuity lead to lessening the birth rate, but it would lead to a much higher mortality in children born. This is found to be a striking fact wherever we find any degree of promiscuity among any people. Hence, promiscuity would soon exterminate any people that practiced it extensively in competition with other peoples that did not practice it.
From all of these lines of argument, without going over the evidence in greater detail, it seems reasonable to conclude with Westermarck "that the hypothesis of a primitive state of promiscuity has no foundation in fact and is essentially unscientific." The facts put forth in support of the theory do not justify the conclusion, Westermarck says, that promiscuity has ever been a general practice among a single people and much less that it was the primitive state. Promiscuity is found, however, more or less in the form of sexual irregularities or immorality among all peoples; more often, however, among the civilized than among the uncivilized, but among no people has it ever existed unqualified by more enduring forms of sex relation. Moreover, because promiscuity breaks up the social bonds, throws the burden of the care of children wholly upon the mother, and lessens the birth rate, we are justified in concluding that promiscuity is essentially an antisocial practice. This agrees with the facts generally shown by criminology and sociology, that the elements practicing promiscuity to any great extent in modern societies are those most closely related with the degenerate and criminal elements. Those elements, in other words, in modern society that practice promiscuity are on the road to extinction, and if a people generally were to practice it there is no reason to believe that such a people would meet with any different fate.