Implications of genetic research for child psychiatry.

OBJECTIVE To review implications of genetic research in child psychiatry. METHOD Key advances in quantitative and molecular genetics are noted and findings are summarized with respect to autism, attention-deficit hyperactivity disorder, oppositional defiant and conduct disorders, depression, schizophrenia, and Tourette's syndrome. CONCLUSIONS Genetic findings will be helpful clinically in the elucidation of disordered brain processes, the understanding of nature-nurture interplay, diagnosis, genetic counselling, and pharmacotherapy.