Objective: The quality of a marital relationship is one of the essential factors in assessing the quality and satisfaction of marriage. This study aimed to validate and standardize the Relationship Quality (RQ) questionnaire. Method: The method of this research in terms of basic-applied purpose and type of cross-sectional-descriptive information collection and methodology is part of the test-making studies that have been done in a correlational research project. The statistical population of this study included all couples in Ardabil. The final sample consisted of 165 married individuals selected by snowball sampling and available. The research instruments included the Relationship Quality (RQ) of Chonodi et al. (2016), The Marital Satisfaction Scale (MSS), and the Kansas Marital Satisfaction Scale (KMS) by Schum, Nichols, Shachtman, and Grigsby (1983). Results: The results showed that the Relationship Quality (RQ) has a goodness of fit in the Iranian population and highly correlates with marital satisfaction. Discussion and Conclusion: The findings showed that the Relationship Quality (RQ) can powerfully identify the quality of couples' communication and can be used in research and clinical work to measure the quality of communication and interference in the relationship.
