The opposite extreme is equally unsatisfactory. If individuals of the first type are trying to build high without adequate foundations, those of the second are mistaking the foundations for a complete building. A dissociation of a different type occurs in them--a dissociation due to lack of use, to a mere failure to connect up that part of the mind concerned with sexual emotion with a great many of the mind’s other activities. Thus the sexual side has few and lower values associated with it than it might, and other possibilities of thought and feeling and action remain as mere possibilities, never realized in actuality. The result is a definitely incomplete personality of a more or less arrested or rudimentary type. Those are the extremes: of course there are all intermediates between them. They may crop up with apparent spontaneity, determined more by the hereditary constitution of the man or woman than by external happenings: or they may be mainly or at least largely determined by the accidents of the environment during the period before maturity. One of the most potent factors in the environment will be the attitude of the parents towards sexual matters. On the one hand they may adopt the common, horror-stricken attitude towards sex, hushing it up, making it clear to the sensitive mind of childhood that there is something thoroughly bad about it, and so laying the best possible foundations for future repression. Or, on the other hand, they may openly adopt the psycho-analytic view as to the rôle of sex in the development of mind, may further believe that the fullest analysis and self-knowledge is always desirable, and may accordingly be pointing out to the child interpretations of its actions and sayings in terms of sex, familiarizing it with sex from the outset, not merely not discouraging but actually encouraging reference to sexual matters. This will tend, _ceteris paribus_, to the development of a mind in which many of the more complex mental operations will not usually persist because the subject will be continually unbuilding them into their constituent parts, of which sex will be the most unvarying and important.