We studied the association of early-life environmental and child factors with disruptive behaviors in children with autistic traits around age 7, in the Avon Longitudinal Study of Parents and Children (n = 6,401). Logistic regression with the least absolute shrinkage and selection operator indicated that disruptive behaviors were associated with…

Prenatal and perinatal factors may increase the risk of autism spectrum disorder. However, little is known about whether unaffected siblings of probands with autism spectrum disorder also share the phenomenon and whether the prenatal/perinatal factors are related to the clinical severity of autistic symptoms. We compared the frequency of prenatal…

This case-control study explores the association between pregnancy/birth complications and other factors with Autism Spectrum Disorder (ASD) in Lebanese subjects aged 2-18 years. Researchers interviewed 136 ASD cases from the American University of Beirut Medical Center Special Kids Clinic, and 178 controls selected by systematic digit dialing in…

The next several pages are intended as a "Commentary" on the six target articles bundled together as a Special Issue of the "Journal of Cognition and Development"--literature reviews and research reports all intended to "build bridges" between the study of cognitive development in typical and atypical populations.

Objective: There is overlap between an autistic and hyperactive-inattentive symptomatology when studied cross-sectionally. This study is the first to examine the longitudinal pattern of association between social-communication deficits and hyperactive-inattentive symptoms in the general population, from childhood through adolescence. We explored…

We conducted a case-control study using 190 Han children with and without autism to investigate prenatal and perinatal risk factors for autism in China. Cases were recruited through public special education schools and controls from regular public schools in the same region (Tianjin), with frequency matching on sex and birth year. Unadjusted…

Background: Symptoms of autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) often co-occur. Given the previously found familiality of ASD symptoms in children with ADHD, addressing these symptoms may be useful for genetic association studies, especially for candidate gene findings that have not been consistently…

Twenty-five autistic children were compared with 25 controls for number of factors identified as optimal in the pre-, peri-, and neonatal period, as noted in medical records. Autistic Ss showed greatly reduced optimality, especially with regard to prenatal factors, in contrast with other reports denying brain injury in autism. (Author/CL)

Perinatal complications have been associated with a myriad of later-developing behavioral, neurological, and psychological disorders. These have included school-related disorders such as attention-deficit/hyperactivity disorder, autism, mood and anxiety disorders, and learning disabilities. This article reviews the research that considers the…

Pregnancy and delivery complications in the birth of 23 high-functioning autistic females and 23 high-functioning autistic males of similar intelligence quotient and age were compared with those of 54 normally developing siblings. Findings suggest that these factors may be less significant in high-functioning individuals than in severely retarded…

This paper reviews Asperger Syndrome, a form of developing autism with average intelligence, in 12 boys (ages 5 to late teens). Examination of family histories, medical history and findings, obstetric, and neonatal data found no common environmental factors and supports a brain damage hypothesis. (DB)

This paper presents two case studies of children who developed herpes virus infection in the intrauterine or early postnatal period and presented with features of autism around two years of age. Other research suggesting a link between herpes and autism is reviewed. (DB)

Examines the biological factors underlying autism, focusing on research in four areas: (1) neurological abnormalities; (2) biochemical abnormalities; (3) genetic problems; and (4) problems during pregnancy or birth. Maintains that autism is a heterogeneous disorder and that there is no unified model that explains its etiology. (Author/KB)