Background Children with attention deficit/hyperactivity disorder (ADHD) often present with
social difficulties, though the extent to which these clearly overlap with symptoms of autism …

To examine whether presentation of autism spectrum disorder (ASD) and associated
patterns of psychiatric comorbidity and dysfunction vary by referral source. ASD youth …

Attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) are both
frequently comorbid with other psychiatric disorders, but the comorbid effect of ASD and …

Objective: We examined the characteristics and heritability of Autism Spectrum Disorder
(ASD) and ADHD through a twin study. Method: Our sample included 44 twins, with at least …

Abstract The Checklist for Autism Spectrum Disorder (CASD) completed by a psychologist
(following standardized procedures integrating parent interview data, teacher report, and …

Despite policy emphasis on early identification, many children with Autism are diagnosed
late, with some being diagnosed as late as adolescence. The objective of this study was to …

OBJECTIVE. Autism is a developmental disorder defined by impaired social interaction,
communication, and behavior. Causes and correlates of autism are largely unknown, but …

Clinical heterogeneity is a well‐established characteristic of autism spectrum disorder
(ASD). While the comorbidity of ASD and ADHD is well known in clinical practice, relatively …

To systematically examine the patterns of psychiatric comorbidity and functioning in clinically
referred adults with autism spectrum disorders (ASD). Psychiatrically referred adults with …

Symptoms of autism spectrum disorder and attention-deficit/hyperactivity disorder often co-
occur, challenging timely, and accurate diagnosis. We assessed the performance of three …