A question may here be raised whether it is possible to reduce all the causes of crime to causes in the social environment—that is, all subjective causes to objective. Many writers have contended that this is possible, but we shall see that there are causes in heredity and causes in psychological conditions, to say nothing of some possible free will in individuals, which cannot be derived from social conditions and which would produce crime quite independent of objective social conditions, unless these subjective factors were also controlled. There is no reason to believe that a perfectly just social organization which did not attempt to control heredity and the moral character of individuals would succeed in eliminating crime. On the contrary, biological variation alone arising from influences independent of the environment would produce a certain amount of crime. Crime, in other words, is, to a certain extent, like pauperism, an expression of the elimination of the inferior variants in society, and will continue to exist as long as we allow the process of evolution by natural selection to go on.
Nevertheless, it is true in a certain sense, as Lacassagne says, that "every society has the criminals it deserves;" that is, every society could, by taking proper means, practically eliminate crime and the criminal class. This would have to be done, however, by something more radical than a mere reorganization of human society in an industrial way. Three things are necessary for society practically to eliminate crime: first, the correction of defects in social conditions, particularly of economic evils in society; second, the proper control of physical heredity by a rational system of eugenics; third, the proper education and training of every child for social life from infancy up.
The Subjective Causes of Crime. In order to see all that is involved in the above program let us study somewhat the subjective causes of crime. These may be divided into biological and psychological. Among the biological causes of crime, and one which certainly cannot be reduced to the environment, is sex. As we have already seen, crime is a social phenomenon which is chiefly confined to the male sex. In 1904, for example, 94.5 per cent of the prison population in the United States were males, and in the statistics of convictions it is estimated that ninety-one men are convicted for every nine women. The statistics for all civilized countries show practically the same conditions, although in most European countries the proportion of female prisoners is somewhat higher, owing, undoubtedly, to certain influences in the social environment.
Another subjective factor in crime, which again cannot be reduced to environment, is age. Practically all crime falls in the active period of life, and the bulk of it between the ages of twenty-one and forty years. The average of men in our state penitentiaries is frequently not above twenty-seven or twenty-eight years.
Other subjective biological conditions that cause crime may be summed up under the word "degeneracy." These abnormal conditions, however, we shall examine later.
Among the psychological conditions of the individual that give rise to crime the most common are habits, aims, and ideals. Of peculiar interest among personal habits that have an influence upon crime is intemperance, and this is such an important cause of crime that we must stop to examine it in some detail. It is often said that 95 per cent of the crime of our country results from this cause alone. The Committee of Fifty, however, investigated the cases of 13,402 convicts with reference to this matter, and found that intemperance was a cause of crime in the cases of 49.95 per cent. It was a chief cause of crime, however, only in the cases of 31.18 per cent. In the remaining cases the intemperance was that of ancestors or associates. Other investigators have found that intemperance figures as a cause of crime in from 60 to 80 per cent of the cases, but these investigations were not so full as that of the Committee of Fifty, and it is safer to conclude, for the present at least, that intemperance figures as a cause in about fifty per cent in the cases of serious crime. The wonder is that any one cause could figure in so many cases when there are so many varied influences in society depressing men. Of course intemperance can, as has already been said, in large part be ascribed to the influence of external stimuli in the environment, but it has also causes in the biological and psychological make-up of certain individuals that cannot be easily reduced to environmental factors.
Influence of Physical Degeneracy upon Crime. By degeneracy we mean, to use Morel's definition, "a morbid deviation from the normal type." That is, degeneracy is such an alteration of organic structures and functions that the organism becomes incapable of adapting itself to more or less complex conditions. Ordinary forms of degeneracy that are well recognized are feeble-mindedness, chronic insanity, chronic epilepsy, congenital deaf-mutism, habitual pauperism, and the like. Now there can be no doubt that criminality in some of its forms is related to these functional forms of degeneracy. Even ordinary people have noticed its similarity to insanity, while Lombroso has traced an elaborate parallel between criminality and epilepsy. Without accepting extreme views, it may be claimed that criminality is, in some cases, a form of biological degeneracy for the following reasons:
(1) The investigations of criminal anthropologists have established the fact that criminals as a class present a much larger number of structural and functional abnormalities than does the average man. The prisoners in our state prisons, for example, with few exceptions, could not measure up to the requirements laid down by the United States Army authorities for the enlistment of soldiers.
(2) Investigations, like that of the Jukes family by Dr. Dugdale, have established the fact that criminals, paupers, imbeciles, drunkards, prostitutes, and other degenerates frequently spring from the same family stock. A very large percentage of the prisoners in our prisons have come from more or less degenerate family stocks.
(3) Criminals more often show other forms of degeneracy than criminality than does the average population; that is, criminals often belong to one of the well-recognized degenerate classes, such as imbeciles, epileptics, and insane.