The document discusses interview methods for research. Interviews involve direct face-to-face interaction between the interviewer and interviewee. They allow for collection of in-depth data through open-ended questions and discussion. There are different types of interviews - structured interviews follow a rigid standardized format; semi-structured interviews have some flexibility in question order; single interviews involve one interviewer and interviewee; group interviews have multiple interviewees. Interviews have advantages like depth of information, insights from experts, and flexibility, but are also time consuming to analyze and can be affected by the interviewer.