(from the journal abstract) The Dyadic Adjustment Scale (DAS) and its revised version (RDAS) are measures of the quality of dyadic relationships. The goal of this study was to assess the properties of the French version of this self-rating instrument by testing the most commonly proposed models of the English version using confirmatory factor analysis. Our study sample included 1,131 parents of school children recruited in the general population in the French-speaking part of Switzerland. Data analysis revealed an excellent fit of the unique-factor solution for both the speaking DAS and RDAS. Alternatively, our analyses also showed a good fit for the hierarchical solution of the DAS. These results provide evidence for similar psychometric properties of the French version of the DAS as compared to the original English version. (PsycINFO Database Record (c) 2004 APA, all rights reserved)