OGIDI REUBEN C. PH.D. Determining the differential item functioning of non-verbal intelligence test using item response theory in Rivers State. The African Journal of Behavioural and Scale Development Research, [S. l.], v. 2, n. 1, 2020. DOI: 10.58579/ajbsdr.v2i1.49. Disponível em: https://ojs.abreap.org/index.php/journal/article/view/49. Acesso em: 8 oct. 2024.