The document discusses different types of social research, including basic research, applied research, and social theory. It outlines purposes of social research such as exploratory, descriptive, explanatory, and evaluation research. Exploratory research aims to develop generalizations about relatively unstudied topics through qualitative analysis and inductive reasoning. Descriptive research objectively describes groups, activities, or events using quantitative analysis. Explanatory research uses existing theories and deductive reasoning to explain why subjects vary. Evaluation research assesses impacts of programs and policies. The document emphasizes that social research can help explore, describe, explain social phenomena, and evaluate policies and programs to create usable theories about society.