A method of assessing risk of ADHD in a human subject is provided. The method comprises the step of identifying in a nucleic acid-containing sample obtained from the human subject copy number variations associated with one or more genes selected from the group consisting of DCLK1, DCLK2, SORCS3, SORCS1, 16p11.2, ASTN2, MACROD2, CHCHD, CPLX2, ZBBX, PTPRN2 and TRIM32 wherein a determination of copy number variations associated with one or more of said genes is indicative of a risk of ADHD in the human subject.
Method of determining risk of a neuropsychiatric disorder