Summary
Highlights
This section introduces the basics of qualitative data collection and sampling strategies, drawing from assigned readings and personal research experience. The four main sources of qualitative data are interviews, focus groups, observations, and documents. Many qualitative studies use a combination of these sources to gain a rich understanding of the research topic.
Interviews can be conducted in person, over the phone, or online, and building trust with participants is crucial. Unlike quantitative interviews which use standardized closed-ended questions, qualitative interviews use open-ended questions. There are three types: structured (fixed questions and order), semi-structured (flexible order and wording, allowing for probes), and unstructured (spontaneous and informal). Semi-structured interviews are often preferred for balancing flexibility and data quality.
Interview questions should avoid one-word responses, academic jargon, leading questions, interpretive questions, and word/time limits. Good qualitative questions often start with 'what,' 'how,' or 'why,' or involve prompts like 'tell me about...' or 'what do you think are the most important...'. Piloting the interview protocol is recommended to ensure questions elicit rich responses. An example protocol for a study on rap music is provided, demonstrating how a few open-ended questions can lead to extensive discussion.
Interviewers should allow participants to do most of the talking, avoid interruptions, and give them time to think and respond, even during awkward silences. Probes and follow-up questions are crucial for eliciting deeper information. The concept of 'problem informants' is introduced, acknowledging that some participants may not provide rich data. The discussion also covers 'saturation,' which is the point at which no new information or themes emerge from interviews, indicating the completion of data collection.
Focus groups involve a group discussion on a particular topic, distinct from group interviews where individuals respond sequentially. They are especially effective when little is known about a topic and are often used in the initial stages of research, sometimes to inform the development of surveys for larger quantitative studies. The interaction among participants can lead to unique insights. Typically, a focus group includes 5-10 participants, with most studies using 2-4 focus groups to reach saturation. Participants should represent the population of interest, and it's often best to separate different stakeholder groups if comparing their perspectives.
Observations involve researchers observing participants in natural or structured environments. This method is valuable because what people say they do is not always what they actually do. Researchers can adopt different roles: complete participant (unbeknownst to the observed), participant as observer (known researcher, deeply involved), observer as participant (known researcher, limited participation), or complete observer (observing from outside without interaction). An example of a participant-as-observer study on campus tours is provided.
Documents serve as another source of qualitative data, including personal documents (e.g., diaries, photos) and official documents (e.g., newspapers, annual reports, meeting minutes, yearbooks, alumni surveys, university archives). An example of a dissertation using student-taken photographs as document data and as interview prompts is given.
Qualitative sampling differs significantly from quantitative sampling; it's purposive rather than aiming for generalization or representativeness. The goal is to select cases conceptually important to the research question. Various purposeful sampling methods include: maximum variation sampling (wide range), homogeneous sampling (intensive study of similar cases), extreme case sampling, typical case sampling, critical case sampling (especially informative cases), negative case sampling (disconfirming theories), opportunistic sampling (using available cases), and mixed purposeful sampling (combining strategies). The choice of sampling strategy depends on the study's purpose and research questions, requiring flexibility from the researcher.
The presentation summarizes key aspects of qualitative research design and data collection, supplementing readings and prior lectures. The instructor plans to conduct in-class activities, including practicing interview protocol construction and interviewing skills, to help students apply these concepts to their action research proposals or future studies.