The research problem addresses what researchers perceive is wrong, missing, or puzzling, or what requires changing, in the world. Presentations of the research problem typically set the stage for the study that will be, or that was, conducted by offering evidence that the problem exists and for whom and by establishing the significance of the problem and why it requires formal inquiry. The research problem, the details of which are fleshed out in a literature review that critically addresses what is known and yet to be known about the problem and how it has been conceptualized and studied to date, leads directly to the research purpose and research question(s).