Box plot of the RAADS-14 Screen score in the samples of phase III. The bottom and top of the box indicate the 25th and 75th percentiles, respectively. The whiskers extend to 1.5 times the height of the box (or to the minimum or maximum values). Circles denote values outside this range. Autism spectrum disorder (ASD) consists of autistic disorder, Asperger’s disorder, and atypical autism. Attention deficit hyperactivity disorder (ADHD) consists of participants with ADHD but no ASD diagnosis. ’Other psychiatric disorders’ consists of participants with a psychiatric diagnosis not including ASD or ADHD.