Sex by age by testosterone interaction on CTh in the complete sample (281 subjects and 469 scans). There were differences between males and females in testosterone-related cortical maturation throughout puberty involving diffuse regions of both the left and right hemispheres. The scale pictures significant interactions in yellow, red, and blue, with regions in yellow–red being significant at the peak level, whereas those in blue are significant at the cluster level. All associations pictured were significant at P< 0.05, corrected for multiple comparisons, using RFT.