This document outlines and describes various research designs used in the social sciences, including survey research, qualitative designs, combined qualitative and quantitative designs, content analysis, pre-experimental designs, quasi-experimental designs, experimental designs, and other considerations like program evaluation and testing instruments. Survey research can be qualitative or quantitative and measures self-report data like opinions and perceptions. Qualitative designs include focus groups, the Delphi technique, and phenomenology. Combined designs use both qualitative and quantitative methods like interviews alongside standardized scales.