This document discusses the design and types of questionnaires used for collecting data from respondents. It defines a questionnaire as a list of questions sent to people to answer, which allows for standardized, tabulated, and statistically analyzed results. The main types of questions discussed are closed-ended, open-ended, rating scales, Likert scales, semantic differentials, multiple choice, rank order, and dichotomous questions. Administration methods can be self-administered via internet, post, or delivery/collection or interview-administered by phone or structured interview.