The document discusses techniques for designing effective questionnaires and forms for data collection. It covers key aspects of questionnaire design such as specifying the needed information, designing individual questions to overcome respondents' inability or unwillingness to answer, choosing appropriate question structures and wording, determining question order, and pre-testing the questionnaire. The goal is to design questionnaires that obtain the required information in an unambiguous way while motivating respondents to participate and minimize errors in responses.