“…Several studies have shown an association between music training and improvement in cognitive skills. Cross-sectional studies have shown that musicians are superior to non-musicians on verbal (Chan et al, 1998 ; Forgeard et al, 2008 ; Chobert et al, 2011 ), spatial (Helmbold et al, 2005 ; Stoesz et al, 2007 ), mathematical (Cheek and Smith, 1999 ; Gouzouasis et al, 2007 ), and general cognitive abilities (Schellenberg, 2011 ). For example, Schellenberg ( 2011 ) revealed that musically trained children had a higher general intelligence (Wechsler Abbreviated Scale of Intelligence; Wechsler, 1999 ) than did untrained children, and this difference remained when demographic variables (parents' education, parents' first language, family income, and non-musical out-of-school activities) were held constant.…”