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The Development of a Reliable Change Index and Cutoff for the Revised Dyadic Adjustment Scale
The Revised Dyadic Adjustment Scale (RDAS; Busby, Crane, Larson, & Christensen, 1995 ) is a measure of couple relationship adjustment that is often used to differentiate between distressed and non‐distressed couples. While the measure currently allows for a determination of whether group mean scores change significantly across administrations, it lacks the ability to determine whether an individual's change in dyadic adjustment is clinically significant. This study addresses this limitation by establishing a cutoff of 47.31 and reliable change index of 11.58 for the RDAS by pooling data across multiple community and clinical samples. An individual whose score on the RDAS moves across the cutoff changes by 12 or more points can be classified as experiencing clinically significant change.
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