Fig. 1

Mean scores for each diagnostic category and subgroup in the 2- and 4-class models in analysis 2. ADHD: Attention Deficit Hyperactivity Disorder; ASD: Autism Spectrum Disorder; CBCL: Child Behavior Checklist; FASD: Fetal Alcohol Spectrum Disorder; NEPSY-II: NEPSY, Second Edition; WASI-II: Wechsler Abbreviated Scales of Intelligence, Second Edition; WISC-IV: Wechsler Intelligence Scale for Children, Fourth Edition. ^aChildren with comorbid diagnoses are not included. Note. All scores are presented as z-scores. In the 2-class model, subgroup 1 is comprised of 20 children with FASD, 22 children with other neurodevelopmental disorders, and six typically developing children; and subgroup 2 is comprised of one child with FASD, six children with other neurodevelopmental disorders, and 31 typically developing children. In the 4-class model, subgroup 1 is comprised of 13 children with FASD, 15 children with other neurodevelopmental disorders, and six typically developing children; subgroup 2 is comprised of five children with FASD and four children with other neurodevelopmental disorders; subgroup 3 is comprised of five children with other neurodevelopmental disorders and 31 typically developing children; and subgroup 4 is comprised of three children with FASD and four children with other neurodevelopmental disorders