“…One study only included girls (Miller, Nevado-Montenegro, and Hinshaw 2011). Three of the studies focussed on children aged between 4-17 years old (Bauermeister et al 2007, Christian and Frick 1997, Miller, Nevado-Montenegro, and Hinshaw 2011, others reported on adolescents between 11-17 years (Meyer et al 1993, Rohde et al 1999, Rushton, Forcier, and Schectman 2002, Barkley et al 1991, Norwich, Cooper, and Maras 2002 and one was restricted to children aged 6-7 years (Reinke et al 2008).…”