“…Because a wealth of previous studies have shown that diverse indexes on domains of children's development, such as adaptation or the internalised and externalised problem behaviours of children and adolescents, are affected by socio-economic status, we have to consider the effects of poverty of their families, education level of parents, parenting behaviours, and children's factors such as age, gender, peer relationships and self-esteem (e.g. Brooks-Gunn & Duncan, 1997;Criss, Pettit, Bates, Dodge, & Lapp, 2002;Donnellan, Trzesniewski, Robins, Moffitt, & Caspi, 2005;Kaiser & Hester, 1997;Moore, Redd, Burkhauser, Mbwana, & Collins, 2009;Reising et al, 2013). Poor children are typically rated by their parents and teachers as having more behavioural problems, such as aggression and acting out, than their peers (Magnuson & Votruba-Drzal, 2009).…”