Rhesus monkeys engineered to express a human gene reportedly show delayed brain development and better short-term memory. Fellow scientists are raising ethical red flags.

A study links having a male twin with women’s educational, financial, and childbearing decisions. Researchers suspect prenatal exposure to testosterone may play a role.

An analysis of the contours of more than 600 kids’ brains points to links between cerebral surface area and heritability in regions of the brain important in cognition.  

Young rats injected with a synthetic cannabinoid have more of the brain’s motivating dopaminergic signaling and fewer numbers of inhibitory neurons than controls.

A longitudinal study tracking the progress of an epilepsy patient after surgery shows the brain’s ability to reorganize itself to function nearly normally.

Regardless of parental income and education, children who engage in more two-way conversation with their parents learn better.

The findings highlight the need for long-term monitoring of children exposed to the virus, say scientists. 

Scientists discover a molecular factor that allows them to follow neurons from birth to maturity.

The effects occurred after rodents consumed the chemical in levels 10- or 20-fold below the recommended daily dose for humans.