This document discusses the importance of conducting a literature review when defining and researching a problem. It notes that a literature review helps identify the research problem, prevent duplicative studies, provide theoretical foundations, and guide the research design and data analysis. The document provides guidance on how to conduct a literature review, including developing search terms, finding primary and secondary sources, taking notes, and summarizing key findings. It also outlines the typical components of a literature review such as the introduction, body, summary, and conclusions.