The Delphi Method strategy within NCU has been updated.
Our Qualitative Research Methods Best Practice Guide states the need for a student to conduct at least 15-20 interviews for a case study, and that all data needs to be triangulated. When other methods are used, a similar level of work needs to be involved. It also states that questionnaires (i.e. those emailed or mailed out) and surveys are not suitable for a qualitative study.
This relates to the need for doctoral dissertations to be rigorous, and there being some level of consistency across students. Qualitative research is rooted in thick and rich data (which typically comes from interviews, focus groups, etc.) Responses from written questionnaires do not provide the same amount of data as data collected from 15 one-hour interviews (for example). In addition, the amount of work a student puts into transcribing and coding interview data is considerably more than reviewing answers from a questionnaire.
For students (in the future) who wish to do a Delphi study, they must do a ‘modified Delphi’ study, where the 15-20 panelists are interviewed in the first round. After that, questionnaires/surveys can be distributed, etc.
One other concern relates to the nature of Delphi research questions. While Delphi focuses on forecasting and the unknowable future, a dissertation focuses on a problem or issue—in the past or present (examined empirically). Students, therefore, need to ensure they have rigorous RQs that align with a traditional dissertation focus.
Here are the direct links to the best practice guides:
So, you may either want to change up your chapter 1 and 3 to update how the Delphi method is presented or change your Methodology altogether.