The Acculturative Family Distancing (AFD) rating questionnaire measures the distancing that occurs between immigrant parents and their children, which is caused by breakdowns in communication and cultural value differences. The items included in the AFD questionnaire are indicators for more proximal and problem-focused aspects of the acculturation gap. In this study, a psychometric analysis is performed on the data gathered with the AFD instrument. One hundred twenty-three Chinese American families (112 mothers, 85 fathers, and 120 children for a total of 317) completed the questionnaire. In addition, the specifications for an extended 2-tier item factor analysis model within a Bayesian multidimensional item response theory framework are provided to psychometrically analyze the AFD data. Results suggest that the original 2 dimensions of Communication Difficulties and Cultural Values Incongruency can be further refined into 4 clinically relevant dimensions (i.e., Verbal Communication Difficulties, Nonverbal Communication Difficulties, General Cultural Values Incongruency, and Family Values Incongruency). Moreover, reducing the number of items can improve AFD estimates and reduce assessment burden.