Podcast
Questions and Answers
What is the main goal of qualitative sampling?
What is the main goal of qualitative sampling?
- To use probability sampling methods
- To select participants randomly
- To generalize findings to a population
- To provide rich data to understand the phenomenon studied (correct)
How is sample size determined in qualitative research?
How is sample size determined in qualitative research?
- By using random selection methods
- By following a fixed formula based on population size
- By choosing all available participants
- By judgment and experience in evaluating collected information quality (correct)
Why are only non-probability sampling methods used in qualitative research?
Why are only non-probability sampling methods used in qualitative research?
- To ensure equal representation of all participants
- To enable generalization of findings
- To identify participants with direct and personal knowledge of the study topic (correct)
- To target random individuals for participation
What is the key criterion for choosing participants and sites in qualitative research?
What is the key criterion for choosing participants and sites in qualitative research?
In qualitative research, what drives the selection of participants?
In qualitative research, what drives the selection of participants?
What is the main difference between sample sizes in quantitative and qualitative research?
What is the main difference between sample sizes in quantitative and qualitative research?
What does data saturation mean in qualitative research?
What does data saturation mean in qualitative research?
Why might qualitative studies with clear topics require fewer participants?
Why might qualitative studies with clear topics require fewer participants?
What is the purpose of an interview protocol in qualitative research?
What is the purpose of an interview protocol in qualitative research?
Why do authors of qualitative studies need to justify the sample size used?
Why do authors of qualitative studies need to justify the sample size used?
Study Notes
Qualitative Sampling Methods
- The goal of qualitative sampling is to choose participants and/or observations that provide rich data to understand the phenomenon studied.
- Qualitative sampling is non-random and uses non-probability sampling methods.
- Participants are recruited based on their ability to provide information (data) to answer the research question.
- Participants must have "direct and personal knowledge" of the study topic and be willing to share and reflect on their experiences.
Sampling Approaches
- Convenience sampling: selecting participants or sites based on ease of access.
- Snowball sampling: selecting participants or sites through referrals from initial participants.
- Purposive sampling: selecting participants or sites based on their expertise or experience.
- Theoretical sampling: selecting participants or sites based on their ability to provide data that fits the emerging theory.
Sample Size
- Sample sizes in qualitative research are smaller than in quantitative research.
- The standard for sample size is whether the participants and sites are "information rich".
- The number of participants or observations required depends on the scope of the study and the quality of the data provided.
Data Saturation
- Data saturation occurs when no new information is obtained from interviews and/or observations.
- Qualitative researchers often report reaching data saturation when collecting enough data.
- The point of data saturation is determined by the researcher's judgment and experience.
Interview Protocol
- An interview protocol is a form designed by the researcher containing instructions for the interview process, questions to be asked, and space to take notes.
- Researchers must ask for permission before recording the interview.
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Description
Test your knowledge on qualitative sampling methods, sample size, and data saturation in qualitative research. Explore the concepts of choosing participants for rich data and discovering meaning through human experience.
