The gambling propensity is another subsidiary trait of the barbarian temperament. It is a concomitant variation of character of almost universal prevalence among sporting men and among men given to warlike and emulative activities generally. This trait also has a direct economic value. It is recognized to be a hindrance to the highest industrial efficiency of the aggregate in any community where it prevails in an appreciable degree.

The gambling proclivity is doubtfully to be classed as a feature belonging exclusively to the predatory type of human nature. The chief factor in the gambling habit is the belief in luck; and this belief is apparently traceable, at least in its elements, to a stage in human evolution antedating the predatory culture. It may well have been under the predatory culture that the belief in luck was developed into the form in which it is present, as the chief element of the gambling proclivity, in the sporting temperament. It probably owes the specific form under which it occurs in the modern culture to the predatory discipline. But the belief in luck is in substance a habit of more ancient date than the predatory culture. It is one form of the artistic apprehension of things. The belief seems to be a trait carried over in substance from an earlier phase into the barbarian culture, and transmuted and transmitted through that culture to a later stage of human development under a specific form imposed by the predatory discipline. But in any case, it is to be taken as an archaic trait, inherited from a more or less remote past, more or less incompatible with the requirements of the modern industrial process, and more or less of a hindrance to the fullest efficiency of the collective economic life of the present.

While the belief in luck is the basis of the gambling habit, it is not the only element that enters into the habit of betting.

Betting on the issue of contests of strength and skill proceeds on a further motive, without which the belief in luck would scarcely come in as a prominent feature of sporting life. This further motive is the desire of the anticipated winner, or the partisan of the anticipated winning side, to heighten his side's ascendency at the cost of the loser. Not only does the stronger side score a more signal victory, and the losing side suffer a more painful and humiliating defeat, in proportion as the pecuniary gain and loss in the wager is large; although this alone is a consideration of material weight. But the wager is commonly laid also with a view, not avowed in words nor even recognized in set terms in petto, to enhancing the chances of success for the contestant on which it is laid. It is felt that substance and solicitude expended to this end can not go for naught in the issue. There is here a special manifestation of the instinct of workmanship, backed by an even more manifest sense that the animistic congruity of things must decide for a victorious outcome for the side in whose behalf the propensity inherent in events has been propitiated and fortified by so much of conative and kinetic urging. This incentive to the wager expresses itself freely under the form of backing one's favorite in any contest, and it is unmistakably a predatory feature. It is as ancillary to the predaceous impulse proper that the belief in luck expresses itself in a wager. So that it may be set down that in so far as the belief in luck comes to expression in the form of laying a wager, it is to be accounted an integral element of the predatory type of character. The belief is, in its elements, an archaic habit which belongs substantially to early, undifferentiated human nature; but when this belief is helped out by the predatory emulative impulse, and so is differentiated into the specific form of the gambling habit, it is, in this higher-developed and specific form, to be classed as a trait of the barbarian character.