I am trying to design a qualitative study (or perhaps mixed method study) on barriers, perceptions and motivation towards active or blended learning strategies in transitional residents and faculty involved in electrolyte and acid base disturbances learning modules. 

Does anyone know of a validated self-completion questionnaire (not necessarily contextual)that can capture those constructs or cpnceptual frameworks as I am not too keen on constructing and validating a new questionnaire.

If you feel qualitative methodology is the way forward- would a focus group or structured 1-to-1 interview be best.

thks