I am a Phd student and am planning an intervention/workshop in management field. Due to the limited time and the complexity of the intervention, I would like to do pre and post-intervention interviews to measure the change of the participants. I am wondering about the feasibility of this and if it is necessary to keep the interview questions exactly the same pre/post intervention?
Comparing pre- and post- responses is most commonly used for quantitative approaches to evaluation. How are you planning to do this with qualitative data?
But how will you assess whether the answers are the same or different? And if you think there are changes, how will you "confirm" those changes?
I thought, if the interviewees gives answers to demonstrate the change, then can I consider that acceptable?
also, if I use the exactly same interview questions, will that help?
After measuring pre and post intervention on the same subjects you can use paired t-test to analysis the data.
Asking the same questions both times follows a kind of quantitative (i.e., t-Test) logic. If you want to assess change qualitatively, I would ask directly about what has changed, as well as how and why that change occurred. You could pair this initial questions about what they expect to change as well as how and why they expect those changes to occur.
Very much yes. It is absolutely necessary to keep the interview questions exactly the same for before and after intervention evaluation. Else it is difficult to identify whether the change in response is due to intervention or due to change in interview/questions.
Kandasamy Ravichandran I obviously disagree with you. Instead of "inferring" change by comparing answers to the same questions (as a quantitative research would do), I would use the strengths of qualitative research to ask about change directly.
David L Morgan I agree with you that the change can be assessed in qualitative research too. But Nicole A. Yeung question is, 'is it necessary to keep the interview questions exactly the same pre/post intervention?’ Obviously it has to be same and can't be changed for afore mentioned reason.
In my opinion, qualitative research is strongest when it comes to understanding how and why things happen the way they do. Simply repeating what you asked at a prior time won't get at the processes that did or did not occur during an intervention. If you want to know "much things changed," then you should use the kind of quantitative tools that are best suited to producing that kind of knowledge.
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