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Flashcards in Qualitative research - sampling Deck (14)
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What is a sample?

-representative section of the wider population
- aim = to generalise from the sample
-needs to be large enough to say with some certainty results are accurate


What is the aim of sampling in qualitative research?

-PPs actively pp in generation of the data
-aim of qual. research is to discover meaning - not to generalise
-so questions asked - decide on the sample


What is the sample in qualitative research?

- deliberately biased = STRENGTH
-using quantitative approaches would be a weakness


How are the sample selected?

-has person experienced phenomenon/culture?
-people who are knowledgeable, reflective and able to talk at length
-practicalities: cost, accessability, ethical issues


What is the sample like in qualitative research?

-30-40 in ethnography or GT


When does the sample emerge in qualitative studies?

-as the study progressess


What are the types of sampling in qualitative research?

convenience, snowball, purposive, homogeneous, theoretical


What is convenience sampling?

-often begin with this
-easy and efficient but not ideal
-e.g. 20 personal students
-start this way but then need to sample more purposefully to get as much info as possible from few PPs


What is snowball sampling?

-ask PPs for others with similar experiences e.g. friends of PPs
-lead to limited sample and ethical issues


What is purposive (purposeful) sampling?

-most studies move on to this
-selecting people who will be most informative
-e.g. maximum variation sampling


What is homeogeneous sampling?

-opposite of maximum variation sampling
-used if want to focus on a particular group and understand them well
-e.g. male STNs first placement


What is theoretical sampling?

-used in grouded theory
-finds PPs who will help the researcher to build the theory
-e.g. socialisation of STNs into ward culture - select certain STNs who have had particular experiences and can offer insight


How do qualitative researchers decide on sample size?

-principle called data saturation guides sample size
-sampling stops when enough data have been collected to describe/explain the issue + no new ideas are emerging
-size = not pre-determined


Is it possible to generalise qualitative research?

-but many debates
-evidence based practice fuels debate
-many researchers argue that if a phenomenon/culture has been described in enough detail, cant be generalised but can be transferred to other settings