I am a Ph.D. student. I have designed a questionnaire to be filled from teachers teaching some e-learning courses. you can view this questionnaire on this link. https://forms.gle/Gsp9TiLzG5FhKAFq7
My question is: I have designed all questions with the support of existing literature. One of my seniors has commented that I should refer to some theory or model to develop this questionnaire. I should have connected the questions with variables of that model.
Now I am confused about whether I am doing it right or wrong? and if she's right, then which theory I should adopt in my case?