“…To sum up, cognitive and psycho-social development are interlinked but also heterogeneous, mostly because of environmental inequalities: parental socio-economic and socio-cultural status, family stress and behavioral patterns (e.g., nutrition, sleep, screen-time) ( Cantin et al, 2012 ; Duncan and Magnuson, 2012 ; Noble et al, 2015 ; Sampedro-Piquero and Begega, 2017 ), parenting style (e.g., education, level of stimulation, usage, attitude, attachment to school, reading level and interest in books) ( Del Boca et al, 2017 ), methods and approach to learning (e.g., Montessori pedagogy, Public/Private school…) ( Al-Mansour and Al-Shorman, 2011 ; Dehaene, 2018 ), and access to extracurricular activities ( Nanhou et al, 2016 ) (see Figure 1 ).…”