Theories of autism

Recent articles

The signaling imbalance theory of autism, explained

The signaling imbalance theory holds that the brains of autistic people are hyper-excitable because of either excess neuronal activity or weak brakes on that activity.

By Sarah DeWeerdt
1 May 2019 | 4 min read

The female protective effect, explained

One of the leading theories of autism posits that girls and women are biologically protected from the condition.

By Hannah Furfaro
1 May 2019 | 4 min read
Illustration of a strong man holding up a oversized brain

The extreme male brain, explained

The ‘extreme male brain’ theory suggests that autism is an exaggeration of systematic sex differences in ways of thinking.

By Hannah Furfaro
1 May 2019 | 5 min read
Illustration of red figures on a big blue brain are serotonin signaling

Serotonin’s link to autism, explained

Serotonin, the brain chemical best known for its link to depression, may also be involved in autism.

By Nicholette Zeliadt
1 May 2019 | 5 min read
A DNA helix showing common and rare variants

The multiple hits theory of autism, explained

Researchers are studying how a combination of genetic ‘hits’ may contribute to autism’s diversity.

By Jessica Wright
1 May 2019 | 4 min read
Illustration shows the world is distorted through a point of view pair of glasses

The predictive coding theory of autism, explained

In autism, a person's brain may not form accurate predictions of imminent experiences, or even if it does, sensory input may override those predictions.

By George Musser
1 May 2019 | 6 min read
overlapping network of connections in the brain

The connectivity theory of autism, explained

A growing body of evidence suggests that autism involves atypical communication between brain regions, but how and where in the brain this plays out is unclear.

By Rachel Zamzow
1 May 2019 | 4 min read

Explore more from The Transmitter

Photograph of a real bird looking at a model bird.

Robots marry natural neuroscience, experimental control to probe animal interactions

Faux fish and birds are helping researchers decipher some of the rules that govern schooling and squawking, among other social behaviors.

By Calli McMurray
19 September 2025 | 7 min read
Research image visualizing genetic variation.

Long-read sequencing unearths overlooked autism-linked variants

Strips that are thousands of base pairs in length offer better resolution of structural variants and tandem repeats, according to two independent preprints.

By Natalia Mesa
18 September 2025 | 6 min read
Collage of images of mice in lab settings.

Competition seeks new algorithms to classify social behavior in animals

The winner of the competition, which launched today and tests contestants’ models head to head, is set to take home $20,000, according to co-organizer Ann Kennedy.

By Angie Voyles Askham
18 September 2025 | 6 min read

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