These include GFOD1, which is associated with attention deficit hyperactivity disorder (ADHD), DLGAP1 which is associated with schizophrenia, DOCK9 associated with bipolar disorder, and SORCS1 which is associated with memory (Detera-Wadleigh et al., 2007; Lasky-Su et al., 2008; Reitz et al., 2011; Li et al., 2013). This evidence concerns the gene DLGAP1 and attention deficit-hyperactivity disorder.