The health and relationship dynamics of late-life couples: a systematic review of the literature

select one of those articles and explain the theoretical perspectives and the methods that the authors used for each study. Make sure that you discuss the following:
What was the theoretical foundation for the study? Specifically, did the author use a functionalist, conflict, interactive or behavioral/developmental perspective for the research?
Did the authors use a quantitative or qualitative approach to the question?
Did the authors use a probability or non-probability sampling design?
Did the authors use a cross-sectional or longitudinal sampling design? If it was longitudinal, what type of study was it (cohort, panel, trend)?
Make sure that you cite your article in APA style