@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/comparison_group>
  skos:definition "In an experiment testing the effects of a treatment, a comparison group refers to a group of units (e.g., persons, classrooms) that receive either no TREATMENT or an alternative treatment. The purpose of a comparison group is to serve as a source of COUNTERFACTUAL causal inference. [Source: <a href=\"https://sk.sagepub.com/reference/socialscience/n142.xml\" target=\"_blank\" data-id=\"to-sk\">The SAGE Encyclopedia of Social Science Research Methods; Comparison Group</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/comparison> ;
  skos:prefLabel "comparison group"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/comparison>
  skos:prefLabel "comparison"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/comparison_group> .

<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/comparison_group> .