Summary
In this working paper, we seek to reconsider long-held practices and ideas applied to the study of family structure over time in the family sciences. Specifically, we aim to guide and support advancements in research methodology as it relates to the study of family structure through the application of a recently developed theoretical perspective: multidimensional family development theory (MFDT). MFDT provides clear, developmentally centered theoretical grounding for the study of family structure, and provides insight to sampling, measurement, and analytic approaches that embrace the richness of diverse family structures, dignify previously marginalized family structures, and avoid a deficit-comparison approach.

Summary
There are more adults in the U.S. and globally who are currently and will remain legally single (i.e., not married) than previously. However, through much of relationship and family science, as well as general society, marriage is upheld as the ideal, aiding in external relationship status stigma. People who do not match the ideal in their relationship structure(s) may internalize relationship status stigma. Understanding relationship status stigma both externally and internalized, can be important for individuals as they develop understanding of their place, their relationship status, which in turn can influence one’s relationships, hope, health, and well-being throughout adulthood.