It is far easier to measure a child's physical growth and maturation than to assess the complexities of individual differences in children's disruptive and antisocial development. Pediatricians can clearly record increases in a child's weight and height on growth charts and even provide percentile estimates indicating how a child compares to others at the same age. Measuring and interpreting acceptable versus unacceptable and normal versus abnormal behaviors among children and adolescents are far more complex. Children and adolescents often t ....