Interview: a conversation with a structure and purpose eliciting a person"s point of view and experiences: face to face guided by questions, gather in-depth information, flexible: researcher can clarify, exploratory, and inductive research. Why interview: when you can"t observe or participate, gain historical information and context, supplements other qualitative methods. Examining a topic through the ideas and opinions of others. Most like real conversations: focus groups. Advantages: gather a lot of information in little time, reduces power imbalances, leads to group rapport. Challenges: tough to organize, tough to direct, groupthink, confidentiality. Sampling: the key for non-probability based research is establishing parameters. Purposive strategy: intentional sampling of particular groups for particular perspectives. Snowball sampling: begins with initial interview with a key informant to recruit others, often used for groups engaging in stigmatized behaviour. Developing open-ended questions: avoid dichotomies and leading questions, ask general and specific questions, ask about: experiences or behaviours, opinions or values, feelings, factual knowledge, sensory experiences, personal background.