These qualities drive the nature versus nurture debate and ask of our species, who is more successful and why? F-ratios were computed at each point on the cortical surface and were converted to uncorrected P values. The unique predictive value of sex on the total volumes was still significant while controlling for the variance associated with age. As with the studies in children, findings have been inconsistent. In these regions, the cortical mantle is up to 0. DFC-H is a measure of radial expansion calculated in millimeters for the distance from the group average center of mass within each hemisphere in the nonscaled image data to each of the 65 matched hemisphere surface points in each individual. Interactions between age and sex in measures of overall and regional brain volumes are also of interest in studies of development and aging, particularly given the robust differences between the sexes in levels of steroid hormones and in cognitive functions that emerge across the life span. So day after day night after night I put my game face on and pretend I'm happy and continue living life. Many have reported more prominent age effects on gray matter structures in men Coffey and others ; Xu and others ; Raz and others ; Sullivan and others ; DeCarli and others Generally, we expected thicker cortices in females, given our previous findings from independent samples using similar methods for matching cortical patterns Luders and others ; Narr and others Briefly, the magnetic resonance images from each individual were analyzed with a series of manual and automated procedures that included 1 transforming brain volumes into a standardized 3-dimensional 3D coordinate space Mazziotta and others using a parameter, linear, automated image registration algorithm Woods and others ; 2 Semiautomated tissue segmentation was conducted for each volume data set to classify voxels based on signal intensity as most representative of gray matter, white matter, or cerebrospinal fluid CSF Sowell and others ; 3 removing nonbrain tissue i. Reply for more details Tweet seeking a hot Vidette, GA cutie to play with Foreman-AR group sex pictures a friend to vent with so I will tell a little of my story. However, there are also sex differences favoring women on tasks such as remembering the location of car keys, which requires both verbal and visuospatial processing. We have developed detailed criteria for delineating the cortical lines and for starting and stopping points for each sulcus using brain surface atlases as references Ono and others ; Duvernoy and others It is not possible to perform an exact permutation test that separates the effects of sex-by-age interactions from the main effects of sex and age given that by definition, the main effects of sex, age, and age2 must be held constant. Together, these results suggest that greater cortical thickness in posterior temporal inferior parietal regions in females relative to males are independent of differences in brain or body size. Maybe not.