Although the term milieu means environment in general, the emphasis in psychiatry and mental health is on the immediate social setting of the individual. This setting is considered primarily from the emotional and interpersonal point of view.The milieu within the home is believed to be the most significant factor in both normal and abnormal development, but other environments also play a role in personality and adjustment. The most important of these are the school, recreation area, church, and neighborhood. The climate of the home and the character of the immediate neighborhood are believed to be crucial both in the maintenance of mental health and in the development of many psychological disorders