Contemporary Family Therapy

, Volume 41, Issue 2, pp 125–134 | Cite as

Rasch Analysis of the Revised Dyadic Adjustment Scale (RDAS) with Military Couples

  • Adam FareroEmail author
  • Ryan Bowles
  • Adrian Blow
  • Lisa Ufer
  • Michelle Kees
  • Danielle Guty
Original Paper


The quality of a romantic relationship can have serious implications for individual well-being. As such, it is important that we are able to accurately measure romantic relationship quality, also known as dyadic adjustment, in order to conduct rigorous studies that include this construct. The Revised Dyadic Adjustment Scale (RDAS; Busby et al., J Marital Fam Ther 21:289–308, 1995), a more concise and valid version of the frequently used Dyadic Adjustment Scale (DAS; Spanier, J Marriage Fam 38:15–28, 1976), was developed to accurately measure dyadic adjustment. However, the RDAS has yet to be validated using advanced measurement techniques. This study specifically evaluated the RDAS using Rasch modeling in a sample of military couples, a population at high risk for relationship challenges due to the deployment process. Evaluation of the RDAS using Rasch modeling confirmed that it serves as both a global and multidimensional scale, with only minor revisions recommended to help improve its validity.


Rasch modeling Relationship adjustment Couples 



This work was supported by the Office of the Assistant Secretary of Defense for Health Affairs through the Psychological Health/Traumatic Brain Injury Research Program under Award Nos. W81XWH-12-1-0419 and 0418 (Blow, PI; Gorman, Partnering PI). Pre-deployment data collection was supported by the Rachel Upjohn Clinical Scholars Award and the Berman Research Fund at the University of Michigan, Depression Center as well as the College of Social Science and the Department of Human Development and Family Studies at Michigan State University.

Compliance with Ethical Standards

Conflict of interest

There were no conflicts of interest, financial or otherwise.

Ethical Approval

Approvals were obtained from the relevant Institutional Review Boards as well as the USAMRMC Office of Research Protections prior to any data collection.

Informed Consent

Informed consent was also given by all individuals prior to their participation in the study.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Michigan State UniversityEast LansingUSA
  2. 2.Michigan Public Health InstituteOkemosUSA
  3. 3.University of MichiganAnn ArborUSA

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