In normal adolescents the volume of cerebellar gray matter starts to decrease around puberty and continues until early adulthood (Diamond, 2000; Ostby et al, 2009). Alterations of this phenomenon have been observed in various psychiatric conditions (Mackie et al, 2007) (Jarvis et al, 2008) (Castellanos et al, 2002) (Pujol et al, 2004) (Hill et al, 2003) and in adolescents with familiar history of severe alcohol abuse (Hill et al, 2007).
