The age average of those whose ages were given--nearly three hundred--was twelve years, including about sixty ranging in age from seventeen to thirty-five. About four-fifths were of American parentage, while the proportion with regard to sex was, roughly speaking, one-third male and two-thirds female, a disparity doubtless attributable in part to the circumstances of the investigation. About one hundred were said not to be in good health, and another hundred to be in outright bad health. In one hundred and thirty-three out of two hundred and fifty-eight cases the temperament was described as "nervous." Precocity was another often-mentioned trait; but on the average the beginning of school life was from a year and a half to two years later than is usual, and in the performance of school work the _questionnaire_ responses also revealed a marked inferiority on the part of many "only children." In their social relations only eighty were reported as "normal," while one hundred and thirty-four out of a total of two hundred and sixty-nine got along badly with other children, usually because they were unwilling or did not know how to make concessions, or were stubbornly set on having their own way. On this important point Doctor Bohannon says, in detail: "When they disagree with other children it is usually because of a desire to rule. If they fail in this desire they are likely to refuse to associate with the children who cause the failure, and in a measure succeed in the wish to have their own way, either by choosing younger companions whom they can control, or older ones who are willing to indulge them. Many do not care for a large number of companions, and select one or two for friends, with whom they prefer to spend most of their time.... In numerous instances ... a marked preference for the company of older people is manifest, even when opportunity for younger company is present. But this is no doubt due less to a dislike of suitable companionship than to their inability to understand and be understood by children of near their own age. It is plainly evident that they have as deep longings for society as the children of other families, but their isolated home life has failed to give them equal skill and ability in social matters. They do not so well understand how to make approaches, to concede this thing and that." Of two hundred and forty-five in attendance at school, more than one hundred "only children" were recorded as not being normally interested in active games, sixty-two of these scarcely playing at all. "If left to their own devices," Doctor Bohannon infers from the reports which he received concerning the inactive sixty-two, "they are pretty sure to be found in the schoolroom with their teachers at intermission. A number of the boys prefer to play with the girls at strictly girls' games, such as keeping house with dolls, and generally come to be called girl-boys."