Which test a clinician uses to diagnose a child with autism may determine whether that child meets the criteria proposed in the newest version of the Diagnostic and Statistical Manual of Mental Disorders.

A subset of questions on two behavioral screens can distinguish children with autism from those with other developmental disorders, according to a study published 23 August in Autism.

Girls are less likely to be diagnosed with autism than boys are, unless they also have intellectual or behavioral problems, according to a study published 26 June in the Journal of the American Academy of Child and Adolescent Psychiatry.

Calibrated severity score, a test based on the Autism Diagnostic Observation Schedule, provides a measure of autism symptoms that is independent of age and language ability, according to a study published 24 May in Autism Research.

A tool designed to detect psychiatric disorders in people with autism may produce more accurate estimates of co-occurring conditions.

Individuals with Cornelia de Lange syndrome, a rare genetic disorder often accompanied by autism, have subtle differences in the nature of their social deficits compared with those who have autism alone, according to a report published 10 April in the Journal of Child Psychology and Psychiatry.

Two reviews sketch a road map for understanding and treating autism in low- and middle-income countries.

Studies of autism prevalence should screen a representative sample of all individuals in the population, even those with no indications of the disorder, says epidemiologist Young-Shin Kim.

A biological signature in the blood could be used to aid the early diagnosis of schizophrenia, according to a study published 12 April in Molecular Psychiatry. The results suggest that various circulating immune molecules and metabolites reflect the biological changes that underlie neurological disorders.

Parents searching for a genetic diagnosis for their child with autism now have a new option: a test that analyzes 62 different genes linked to syndromic autism, meaning cases of the disorder caused by mutation of a single gene.