I know that this is a question like "How long is a piece of string" yet would be interested whether anyone had any personal experience in developing a valid and reliable questionnaire.
My supervisor mentioned something like a year which seems a bit excessive to me.

Any views?

I'm a quantitative researcher, hence I'll keep this brief (cos have little experience!) but a year doesn't sound particularly excessive to me, it sounds realistic. By the time you research the literature, create a pilot and send it out, chase up the responses, chase up the responses again, get feedback and revise it (and perhaps repeat process), the weeks and months soon slip by. Good luck!

Hi Ann

thanks

Yeah you may well be right if things have to be repeated several times. The literature research I have done already so would safe me some time.

Are you a qualitative or quantitative researcher?