“…Among the many conclusions from PISA relating to mathematics, reports have stressed that students' interest in and enjoyment of this area is low, and even noted the presence of personal issues such as anxiety and lack of confidence, especially in girls (Organization for Economic Cooperation, and Development, 2013;Mizala et al, 2015;Organization for Economic Cooperation and Development, 2019d). Throughout the PISA assessments, boys have always had better results than girls in mathematical competence (Ministerio de Educación y Formación Profesional, 2019), with sex being a predictor variable of mathematical performance (Farfán and Simón, 2017;Fuentes and Renobell, 2019;Palomares-Ruiz and García-Perales, 2020). Biological and social factors may act in an interrelated way (Chamorro-Premuzic et al, 2009;Muelas, 2014), including intellectual capacity (Schillinger et al, 2018), complex mathematical reasoning (Desco et al, 2011) and other factors of an individual nature with an impact on the mathematical learning process (Song et al, 2010;Marsh and Martin, 2011;Rodríguez and Guzmán, 2018), school (Carey et al, 2016;Dowker et al, 2016;Schillinger et al, 2018), and family (Pelegrina et al, 2002;Ferreira et al, 2017;Rodríguez-Mantilla et al, 2018).…”