It is well established that ADHD persists into adulthood with some changes in the clinical presentation, but structural stability of ADHD across different stages of adulthood has rarely been examined. This study used a multiple-group confirmatory factor analysis (CFA) approach to examine the measurement invariance of the latent 5-factor structure of the Conners Adult ADHD Rating Scales, 2nd Edition (CAARS 2) across stages of emerging (18-24 years), early (25-39 years), and middle adulthood…
