The first large population-based analysis of the prevalence of regression in autism reveals that it occurs in 20 percent of children with autism.

Autism is four times more prevalent among extremely premature babies than in the general population.

The mutations that men accumulate in their sperm as they age don’t account for most of their increased risk of having a child with autism.

Researchers are trying to study autism in one of the most politically and economically unstable regions in the world.

Clinicians are underdiagnosing autism in children from low-income families and minority groups — setting back their potential to benefit from therapy.

A video-guided screening tool may boost the reliability of parent reports about autism-like behaviors.

The best practices for prevalence studies are all but impossible in countries facing rampant poverty and instability.

A widely used screening tool is equally effective at detecting autism symptoms in both black and white toddlers, but misses girls of either race.

Minority families often miss out on treatment or get left out of research — an ethical failure. New projects are illuminating autism’s diverse shades.

The authors of “Neurotribes” and “In a Different Key” urge scientists to question their biases and to translate their findings into tangible benefits for those on the spectrum.