Males had higher mean scores than females for each behavioral disinhibition measure. Thus, each component score was sex corrected using standard linear regression methods, yielding standardized residual scores. Following the procedures we used in our earlier work on behavioral disinhibition (Young et al., 2000), we also residualized for age, which showed a small but significant positive correlation with most of the behavioral measures. An evaluation of skewness and kurtosis showed unacceptable nonnormality in the individual measures. Thus, a rank normalization procedure was used to transform each variable to approximate normality (Blom, 1958).
