This document discusses how to construct and use questionnaires and interviews for research. It covers topics like question formats (direct vs indirect, specific vs nonspecific), response modes (open-ended, scaled, ranking, checklist), steps for constructing a questionnaire or interview (specifying variables, choosing question/response formats, pilot testing), sampling procedures, administering questionnaires, conducting interviews, and coding responses. The goal is to provide guidance on converting information received from people into quantitative data that can be analyzed.