It has been suggested that the increased differentiation of brain connectivity in adolescence is in correlation with hormonal changes in puberty. On average, the INAH-3 is significantly larger in males than in females regardless of age. Numerous studies suggest that, on average, female brains have more commissural tracts involved in inter-hemispheric connectivity than males. One difference is the proportions of white matter relative to grey matter. On average, men outperformed women at learning and accomplishing single tasks, like cycling and navigating directions, while females had better memory and social cognition skills making them more adjusted to multitasking and coming up with consensus solutions. Conversely, the primary visual, and visuo-spatial association areas of the parietal lobes are proportionally larger in males. Two studies found that men have larger parietal lobes , an area responsible for sensory input including spatial sense and navigation; though, another study failed to find any statistically significant difference. Although, fewer studies have alternatively found otherwise. Several psychological studies contradict this however, as it has been found that female patients are actually more than twice as likely as male patients to be susceptible to depressive episodes and generalized anxiety, and additionally that progesterone levels in females actually stall the body's ability to turn off stressor hormones resulting in female subjects entering depressive episodes at even lower levels of stress than male subjects. Although women do lose bone density faster than men after menopause, the data shows a larger disparity because there are more older women in the population. These subregions may serve as the basis for sex differences in language. On average, female brains have a larger ratio of grey matter to white matter than males particularly in dorsolateral prefrontal cortex and superior temporal gyrus , even when sex-differences in total intracranial volume are taken into consideration.