This document discusses the process of developing a questionnaire for research. It covers stages of questionnaire development such as exploratory interviews, pilot testing, and pretesting. It also discusses different types of questions, question formats, and guidelines for writing good questions. The document provides examples of good and bad question wording and explains concepts like mutually exclusive and exhaustive response categories. It then presents an example of using a questionnaire to study promotional methods, including developing hypotheses, collecting data, and analyzing results.