The pattern of decrease and recovery is somewhat more pronounced in females than in males. To characterize this pattern, increases from the minimum value of the correlation to the value at age 25 were calculated. Increases from minimum to final values in intermodal correlations ranges between 2% and 30% of the mean values for females and between 2% and 17% of the mean values for males. As described in the final paragraph of section 2.3.2, an additional statistical test was used to evaluate the significance of these increases. Increases in four of the nine intermodal correlations: Auditory Cz – Visual Cz, Auditory Cz – Visual Fz, Auditory Pz – Visual Cz, Auditory Cz – Visual Pz; had p-values less than 10−6 for both genders. Differences in four of the other intermodal correlations were significant in one gender only at a 10−6 level: Auditory Fz – Visual Fz, Auditory Fz – Visual Cz, Auditory Pz – Visual Fz, Auditory Pz – Visual Pz. (See Table 3.)
