MAOA throughout adolescence. Third, these analyses treated CD as a categorical outcome and ignored the additional information that might be reflected by using indices of severity such as symptom counts or by differentiating subtypes such as aggressive and non-aggressive behaviors. Fourth, the occurrence of X-inactivation in females has resulted in little attention to differences in enzyme function for different MAOA genotypes in females. Finally, all participants were Caucasian and the results may not generalize to populations of differing ethnicities and cultural norms.
