@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/questionnaires>
  skos:definition "Questionnaires provide case study researchers with a data-gathering technique that collects, through written self-reports, either quantitative or qualitative information from an individual unit (e.g., a child, group, school, community) regarding the unit's knowledge, beliefs, opinions, or attitudes about or toward a phenomenon under investigation. This method of data collection is one of a subset of general survey techniques that includes collecting information either through oral responses, such as interviews, surveys, or polls, or through written responses, such as questionnaires, scales, or other documents. [Source: <a href=\"https://sk.sagepub.com/reference/casestudy/n282.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Case Study Research; Questionnaires</a>]"@en ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/self-reports>, <https://concepts.sagepub.com/social-science/concept/Delphi_technique>, <https://concepts.sagepub.com/social-science/concept/delphi_surveys> ;
  skos:exactMatch <https://id.nlm.nih.gov/mesh/D011795.html> ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/data_collection> ;
  skos:prefLabel "questionnaires"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/self-reports>
  skos:prefLabel "self-reports"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/questionnaires> .

<https://concepts.sagepub.com/social-science/concept/data_collection>
  skos:prefLabel "data collection"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/questionnaires> .

<https://concepts.sagepub.com/social-science/concept/delphi_surveys>
  skos:prefLabel "delphi surveys"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/questionnaires> .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/methods>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "methods"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/questionnaires> .

<https://concepts.sagepub.com/social-science/concept/Delphi_technique>
  skos:prefLabel "Delphi technique"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/questionnaires> .