Samara, Muthanna ORCID: 0000-0002-7857-1204, Foody, Mairead ORCID: 0000-0003-0026-0294, Gobel, Kristin, Altawil, Mohamed and Scheithauer, Herbert (2019) Do cross-national and ethnic group bullying comparisons represent reality? Testing instruments for structural equivalence and structural isomorphism. Frontiers in Psychology, 10 . ISSN 1664-1078