What caution does the text give about fitting a research problem to a theory after the fact?

The text cautions that an after-the-fact linkage of theory to a research problem does not always enhance a study and should be done with circumspection. Artificially linking a problem to a theory after the fact is not a route to scientific utility or to enhancing nursing's evidence base, and many published studies show tenuous post hoc linkages. A genuine link means the study's design, measurement decisions, and interpretations all flow from the conceptualization, not from a theory added on later.

The text warns that when researchers develop research questions or hypotheses first and then try to devise a theoretical context afterward, this after-the-fact linkage may be worthwhile in some cases but does not always enhance the study. An important exception is when a researcher is trying to interpret findings and calls on an existing theory to help explain them. The text explicitly says such fitting should be done with circumspection: artificially linking a problem to a theory is not the route to scientific utility nor to enhancing nursing's evidence base. It notes that many published studies purport to have a conceptual framework when in reality the post hoc linkage is tenuous and all too evident. A conceptual model genuinely linked to a problem should drive the design, what is measured and how, and the interpretation of findings. The text also advises that if you begin with a research question and later identify a theory, you should be willing to adapt or augment the original research problem as your understanding of the theory grows, since the linking may require an iterative approach.