Another interesting question relating to the direction of object love towards the parents is connected with the fact that, in the case of female children, the influences making towards heterosexual choice of object would seem, under normal conditions of upbringing, to be liable to conflict with the tendency for the affections of the child to go out in the first place towards those to whom the child is chiefly indebted for the satisfaction of its more immediate bodily needs. Under these circumstances it might perhaps be expected that it would be usual for girls to pass through a stage of mother love before transferring the greater part of their affection to their father. There is much reason to think that the number of girls retaining an unusual or pathological degree of mother love in later years is greater than the number of boys retaining a corresponding degree of father love; if this be the case, it may perhaps be held to show that the mother is indeed the first object of affection in both boys and girls and that some of the latter retain marked traces of this stage of their development throughout subsequent life. Additional evidence pointing in the same direction seems to be forthcoming from a number of pathological cases among adult women, the study of which has revealed the existence of a persistent and intense attachment to the mother; this attachment being of an infantile character and situated in a deeper and more inaccessible layer of the Unconscious than the father love, which appeared to have been, in the process of growth, as it were, superimposed upon the earlier affection. If father love in girls should prove to be normally built upon the remains of an earlier period of exclusive mother love which is common to both girls and boys, it is evident that in this respect the development of heterosexual object love in girls is a rather more complex process than it is in boys. This greater complexity of the process of development may, as Freud himself has pointed out in a somewhat different but not altogether unrelated connection[10], become the cause of a number of those failures of adjustment to the conditions of adult life--sexual and general--that are found to underlie the neuroses. The greater incidence of certain neurotic disturbances among women as compared with men may perhaps ultimately be due in part[11] to the greater complexity of the original process by which the object love of the child comes to be directed to the parent of the opposite sex. [Sidenote: Jealousy]