%0 Journal Article %T Measuring Relationship Quality in an International Study: Exploratory and Confirmatory Factor Validity %A Jacqui Gabb %A Jill M. Chonody %A Mike Killian %A Priscilla Dunk-West %J Research on Social Work Practice %@ 1552-7581 %D 2018 %R 10.1177/1049731516631120 %X This study reports on the operationalization and testing of the newly developed Relationship Quality (RQ) scale, designed to assess an individual¡¯s perception of his or her RQ in their current partnership. Data were generated through extended sampling from an original U.K.-based research project, Enduring Love? Couple relationships in the 21st century. This mixed methods study was designed to investigate how couples experience, understand, and sustain their long-term relationships. This article utilizes the cross-sectional, community sample (N = 8,132) from this combined data set, drawn primarily from the United Kingdom, United States, and Australia. A two-part approach to scale development was employed. An initial 15-item pool was subjected to exploratory factor analysis leading into confirmatory factor analysis using structural equation modeling. The final 9-item scale evidenced convergent construct validity and known-groups validity along with strong reliability. Implications for future research and professional practice are discussed %K relationship quality %K scale %K measurement %K long-term couple relationships %K relationship satisfaction %U https://journals.sagepub.com/doi/full/10.1177/1049731516631120