The loss, deterioration, or atrophy of internal bonding has been found in large segments of the youth population; such youths are characterized by apathy and aimlessness regarding major life values and goals such as education, vocation, individuality, and social affirmation. Social disconnectedness in terms of the loss and deterioration of external bonds has also been found: opportunities for participation in social roles are closed to many youths who are branded as failures, stigmatized by parents, teachers, and peers, and relegated to marginal social roles. Findings regarding personal predispositions suggest that lonely adolescents tend to dislike themselves, to dislike others, to be passive, to feel powerless, and to feel uncomfortable in social situations. The loneliest youth exhibit less caring for their parents, teachers, other youth, their schools, and their own futures than do most other youth. Lonely youths see no real support in their environment; they therefore tend to associate with other failing and rejected youths, which may be a link in the development of delinquent peer groups. Data on the family environments of lonely youth suggest an absence of emotional nurturance, guidance, and support. A potential line for future research would be the study of the antecedents of powerlessness, external control, and passivity. (Author/CS)