This study of 2,148 international adoptees aged 10 to 15 indicated that the older the child at placement the greater the probability that the child will develop behavioral/emotional problems and/or will perform less well in school. For 12- to 15-year-olds, the authors found that the older the child at placement, the greater the risk for obtaining high scores on the following Child Behavior Checklist Syndromes: The delinquent and uncommunicative syndromes in boys, and the cruel, depressed, and schizoid syndromes in girls.