The home is the place and the parent is the agency for character-culture. Every father of boys ought to be a boy-expert. And he can be, by devoting to this most important of all subjects a tithe of the study which he devotes to his business or to his profession. Many parents rely entirely upon instinct or natural inclinations--which are influenced largely by mental and temperamental conditions--as their guide in boy-training. An inactive liver too frequently determines our attitude toward our offspring. Is it fair to the son that the parent blindly and blunderingly pursues his natural inclinations in training his son, instead of availing himself of the results of the research and the thought which have already been given to this subject? More boys go wrong than girls, of which fact the records of juvenile courts, reformatories, and houses of detention bear ample evidence; and they are more difficult to train, develop, and discipline than girls. This is due to the differences in their psychological processes. Girlhood finds ample opportunity for its development in the seclusion of the home. The future function of the woman child is to be the home-maker and the bearer of children, and her training for this divine responsibility can be accomplished best amid the refining influences and protecting care which the home affords. The future of the man child is to be the breadwinner of the family and the burden-bearer of civilization. The training necessary to produce such diverse results must be as different as the respective life-works of man and woman. Boyhood requires, among other things, adventure, rough sports and out-of-door activities for its development. Boys are less obedient, less tractable, and less amenable to discipline than girls, therefore their training is correspondingly difficult and involved. We should not expect to understand the heart and soul of the boy more easily than his anatomy and physiology. The boy sees things from a point of view different from that of the adult, based on psychological differences. The mature individual cannot obtain the boy’s viewpoint unless he is able to put himself in his place. To do this he must know the child’s changing mental processes and the evolution of his moral perceptions which are manifested in the four periods of his development, in each of which he exhibits a personality as far apart as those of four individuals of widely differing natures. The boy at six, ten, fourteen, and eighteen years of age is four different personalities, and he requires four different methods of treatment. These psychological prescriptions are as dissimilar as the medical prescriptions for boils, measles, influenza, and typhoid. The methods and plans suited for one period are unsuited for another. The realization of this basic truth is the first step toward the solution of your boy’s problems.