The findings in rhesus macaque monkeys may provide clues to sex differences in the heredity of social behavior in people.

This edition of Null and Noteworthy highlights results that reveal the difficulty in drawing definitive conclusions from data, including new findings about epidurals that contradict several others and an apparent null result on sex differences that may derive from “circular logic.”

Over one hour, a particularly motivated mouse poked its nose 350 times into a hole in the test chamber in the hopes of meeting a playmate.

The variants are associated with slight differences in measures of intelligence, income and employment, but the relationship may not be causal.

The finding underscores a need for adult autism diagnostic services.

Compared with their non-autistic peers, young autistic girls have a thicker cortex that thins more quickly with age.

The Gender Self-Report could help autism researchers include more gender-diverse people across a range of ages and neurotypes in their work.

Male rats prenatally exposed to a maternal immune response have atypical responses to other rats in distress, according to a new study.

Common diagnostic and research practices may be adding to autism’s sex bias, but there are some simple steps scientists can take to counteract it.

Such high expression levels may account for the condition’s sex bias, a new preprint suggests — but not everyone agrees with that logic.