On my view, perhaps the most important contribution that theory makes to social research is the provision of concepts with which researchers can describe, explain, and interpret social phenomena. The concepts I have in mind include the frameworks of categories and assumptions that Stefan Hirschauer mentions in his characterization of practice theory quoted on the blog website:
“Practice theories are a kind of ‘modest grand theories’ as they offer mere frameworks of categories and assumptions for developing substantial theories of specific practices.” (Hirschauer; quoted on the blog website)
Practice theories tend to provide concepts that specify the stuff, if you will, out of which social phenomena consist, namely, practices, including what composes practices — above all, actions and material entities — and the wider complexes and constellations formed by practices (the plenum of practices). Encompassing both the composition and wider plenum of practices, practice theoretical ontologies can be quite elaborate.