Los puntos clave no están disponibles para este artículo en este momento.
Thomas M. Achenbach, Catherine T. Howell, Herbert C. Quay, C. Keith Conners, John E. Bates, National Survey of Problems and Competencies among Four- to Sixteen-Year-Olds: Parents' Reports for Normative and Clinical Samples, Monographs of the Society for Research in Child Development, Vol. 56, No. 3, National Survey of Problems and Competencies among Four- to Sixteen-Year-Olds: Parents' Reports for Normative and Clinical Samples (1991), pp. i+iii-vi+1-130
Achenbach et al. (Tue,) studied this question.