Previous research has identified possible sex-based differences in restricted and repetitive behaviors in autism spectrum disorder (ASD). However, this finding is mixed, particularly among preschool-aged children. We investigated the presence of sex-based differences in parent-rated ASD symptomatology, using the Autism Spectrum Rating Scale…

This study investigated the prevalence and type of gastrointestinal (GI) and food selectivity (FS) symptoms in 163 preschoolers with ASD, and their possible links with core ASD features and emotional/behavioural problems. 40.5% of children with ASD had at least one severe GI symptom or FS. Preschoolers with and without GI symptoms and with and…

The prevalence of and risk factors for aggression were examined in 1,380 children and adolescents with autism spectrum disorders (ASD). Prevalence was high, with parents reporting that 68% had demonstrated aggression to a caregiver and 49% to non-caregivers. Overall, aggression was not associated with clinician observed severity of ASD symptoms,…

Collaborative problem solving (CPS) requires sharing goals/attention and coordinating actions--all deficient in HFASD. Group differences were examined in CPS (HFASD/typical), with a friend versus with a non-friend. Participants included 28 HFASD and 30 typical children aged 3-6 years and their 58 friends and 58 non-friends. Groups were matched on…

Longitudinal research into adult outcomes in autism remains limited. Unlike previous longitudinal examinations of adult outcome in autism, the twenty participants in this study were evaluated across multiple assessments between early childhood (M = 3.9 years) and adulthood (M = 26.6 years). In early childhood, responsiveness to joint attention…

We retrospectively compared 2 groups of children receiving either behavioral treatment (n=13) or eclectic treatment (n=15) for an average of 12 hours per week. Children were assessed on intelligence, language, adaptive functioning and maladaptive behavior at pretreatment and 2 years into treatment. The groups did not differ significantly at…

The maladaptive behaviors, personality, and language skills of a male whose chromosome analysis showed evidence of mosaicism with karyotype 49,XXXXY and 48,XXXY are described. Research on severity of mental handicap with extra chromosomes, delayed speech development, and discrepancy between verbal and performance intelligence is examined. (JDD)

Of 135 autistic and/or mentally retarded Tokyo youngsters, 30 with pervasive developmental disorder (PDD) and 2 with nonautistic mental retardation exhibited school refusal. School refusal was significantly more frequent in other PDDs than in nonautistic mental retardation. The intellectual level was significantly higher in PDD children with…

Eighty children, ages 3 to 17, with autism or Asperger's syndrome and mild to severe distress in the presence of some sounds received either auditory training or a control condition of listening to the same music. Significant improvements in behavior, severity of autism, and IQ were achieved and maintained for 12 months by both groups. (Author/DB)