The reason for conducting the present case study was the problems the researchers encountered during data collection for another research project (Primary Study) entitled "The effects of virtual versus traditional flipped classes on EFL learners' grammar knowledge, self-regulation, and autonomy." Two online questionnaires were…

'Everybody can quickly collect data using questionnaires'--this is an incorrect assumption among not only students but also veteran researchers. As a researcher and lecturer for research methods, I have more than once came across carelessly conducted studies using poorly constructed questionnaires meant to inform the implementation of…