A non-probability sample that is selected based on characteristics of a population and the objective of the study
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What are some examples of purposive sampling?
Theoretical, generic, snowball sampling
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What is theoretical sampling?
A tool that allows the researcher to generate theoretical insights by drawing on comparisons among samples of data
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What is the process of theoretical sampling?
General research question > sample theoretically > collect data > analyse data > theoretical saturation > generate hypotheses > sample theoretically
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What is generic purposive sampling?
When the researcher establishes criteria concerning the kinds of cases needed to address the research questions, identifies appropriate cases and then samples from those cases that have been identified
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What is the main sampling issue in qualitative research?
It can be difficult to establish how many people will be used in the sample if theoretical considerations guide selection
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