Structural relations of loners' loneliness and antisocial behaviour in children and adolescents: building a conceptual model for effective intervention. This is the first research project to develop a conceptual model of loneliness and detached a-loneness to explain the contribution of loneliness to childhood and adolescent antisocial behaviour. The outcome will be a school-based web delivered program which will have a major impact on promoting the healthy development of young Australians.