Sex differences in brain connectivity and cognition

A large cross-sectional study analyzing sex differences in behavioral and imaging data, namely global functional connectivity density at rest, mean water diffusivity, and total cognitive scores, from children aged between 9 and 11 years old.
Girls had higher functional connectivity density, lower mean water diffusivity and transverse diffusivity. Age-corrected fluid and total composite scores were also higher in girls than in boys.
Total mean brain volume and the proportion of white matter were larger for boys, however, the proportion of gray matter was larger for girls.
Authors have suggested that this information could input into the creation of brain developmental trajectory charts, which could be used for future investigations into any impairments in cognition or behavior.