Is something rotten in the state of Denmark? Cross-national evidence for widespread involvement but not systematic use of questionable research practices across all fields of research

• Jesper W. Schneider ,

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Writing – original draft, Writing – review & editing

  * E-mail: jws@ps.au.dk

  Affiliation Danish Centre for Studies in Research and Research Policy, Aarhus University, Aarhus, Denmark

  https://orcid.org/0000-0001-5556-0919

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• Nick Allum,

  Roles Conceptualization, Formal analysis

  Affiliation Department of Sociology, University of Essex, Essex, United Kingdom

  https://orcid.org/0000-0002-1746-2514

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• Jens Peter Andersen,

  Roles Data curation, Methodology, Software

  Affiliation Danish Centre for Studies in Research and Research Policy, Aarhus University, Aarhus, Denmark

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• Michael Bang Petersen,

  Roles Conceptualization, Formal analysis, Methodology, Writing – review & editing

  Affiliation Department of Political Science, Aarhus University, Aarhus, Denmark

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• Emil B. Madsen,

  Roles Data curation, Formal analysis, Visualization, Writing – review & editing

  Affiliation Danish Centre for Studies in Research and Research Policy, Aarhus University, Aarhus, Denmark

  https://orcid.org/0000-0003-4394-5373

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• Niels Mejlgaard,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliation Danish Centre for Studies in Research and Research Policy, Aarhus University, Aarhus, Denmark

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• Robert Zachariae

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliations Unit for Psychooncology and Health Psychology (EPoS), Department of Oncology, Aarhus University Hospital, Aarhus, Denmark, Department Psychology and Behavioral Science, Aarhus University, Aarhus, Denmark

  https://orcid.org/0000-0001-9076-3068

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