Can your brain be trained to make better brain waves? That’s the bizarre premise of ‘neurofeedback,’ a technique in which participants don a cap of electrodes and are rewarded — with soothing music, say, or points in a video game — for ‘desirable’ brain activity.

A searchable new database will greatly ease the task of comparing results from more than 25 diagnostic tests for autism, by creating clusters of the various symptoms measured.

Individuals with attention deficit hyperactivity disorder (ADHD) have a higher rate of DNA duplications and deletions, including some in regions linked to autism and schizophrenia, according to a study published 23 October in The Lancet.

New DNA tests for fragile X syndrome are quick, but also raise ethical questions: they pick up abnormalities in some babies who won’t develop symptoms until adulthood, if at all.

A new wave of genetic tests for fragile X syndrome, the leading cause of inherited mental retardation and the most common genetic cause of autism, may make it possible to routinely screen pregnant women and newborns for the syndrome.

Two new studies provide clues that may explain sex differences in autism prevalence. Italian researchers have found that injecting estrogen into the brains of young male mice reverses some of the structural and behavioral changes associated with low levels of reelin — a brain protein that has been previously implicated in autism — and the effects endure into adulthood.

A decade ago, children with disabilities were almost always separated into their own rooms — or even buildings — with specialized teachers and lessons. But some research since then has shown that many of these children can learn well alongside healthy children, and vice versa.

For a few hundred dollars and a bit of your spit, you can have parts of your DNA analyzed. If you’re more ambitious, $20,000 — and a lot less than that a year from now — will buy you the sequence of your entire genome. But the real question is should you, and others like you, find out what secrets your genome holds?

If you believe the hype about oxytocin, it’s nothing short of a wonder drug: it can make you trust a stranger, enhance a mother’s bond with her child and, according to a study published earlier this year, improve social skills in individuals with autism. But look more closely, and there is ample cause for caution.

An imaging study widely interpreted as heralding a diagnostic brain scan for autism is more preliminary than popular media reports would indicate, according to experts familiar with the work.