Determinants of using experimental groups and choosing reasons in psychological researches. Journal Of Educational and Psychological Researches, [S. l.], v. 10, n. 37, p. 108–128, 2013. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/542. Acesso em: 6 may. 2025.