The "aristocracy of service".
D000293:Adolescent; D002648:Child; D002657:Child Development; D002668:Child Rearing; D005260:Female; D006801:Humans; D007092:Imagination; D008297:Male; D010287:Parent-Child Relations; D010809:Physical Fitness; D000297:Psychology, Adolescent; D011593:Psychology, Social; D012574:Schools; D012907:Smoking