The document discusses different types of research approaches, including qualitative, descriptive, and experimental research. Qualitative research involves defining a phenomenon to study, using qualitative methods to collect data, looking for patterns in the data, validating initial conclusions, and recycling data. Descriptive research uses case studies, group studies, surveys, questionnaires, self-reports, interviews, and observations to describe phenomena as they naturally occur from different perspectives. Experimental research utilizes tests, surveys, and questionnaires to collect data.