Table 1 displays characteristics of the samples used for evaluating the associations between the SSAGA-based Internalizing Scale and the Internalizing Scale from the Youth and Adult Achenbach Self Reports, and the Neuroticism Subscale of the Neuroticism-Extraversion-Openness Five-Factor Personality Inventory. There was a moderate association between the Internalizing Scale from the Adult Achenbach Self Report and the Neuroticism Subscale of the Five-Factor Personality Inventory (r = 0.39; 95% CI = [0.18, 0.56]; p < 0.0001). Positive associations between the Internalizing Scale and the Internalizing Problems raw score of: a) the Adult Achenbach Self Report (r = 0.40; 95% CI = [0.25, 0.53]; p < 0.0001) and b) the Youth Achenbach Self Report (r = 0.35; 95% CI = [0.18, 0.50]; p < 0.0001) supported construct validity. The Internalizing Scale was also positively associated with the Neuroticism Subscale (r = 0.20; 95% CI = [0.03, 0.36]; p = 0.02), providing further support for construct validity.
