Neglect of publication bias compromises meta-analyses of educational research

• Ivan Ropovik ,

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

  * E-mail: ivan.ropovik@gmail.com

  Affiliations Institute for Research and Development of Education, Faculty of Education, Charles University, Prague, Czechia, Faculty of Education, University of Presov, Presov, Slovakia

  https://orcid.org/0000-0001-5222-1233

  ⨯
• Matus Adamkovic,

  Roles Conceptualization, Data curation, Funding acquisition, Investigation, Writing – review & editing

  Affiliations Institute for Research and Development of Education, Faculty of Education, Charles University, Prague, Czechia, Institute of Psychology, Faculty of Arts, University of Presov, Presov, Slovakia

  https://orcid.org/0000-0002-9648-9108

  ⨯
• David Greger

  Roles Funding acquisition, Supervision, Writing – review & editing

  Affiliation Institute for Research and Development of Education, Faculty of Education, Charles University, Prague, Czechia

  https://orcid.org/0000-0002-1615-0404

  ⨯