Prosocial behaviour in adolescence relates to parenting styles in childhood and adolescence. Prosocial behaviour is defined by Berk (2008) as “actions that benefit another person without any expected reward for the self” (p 201). It is believed that positive parenting in childhood and adolescence creates more prosocial behaviour in childhood which develops through adolescence. This was found by Hastings, McShane, Parker, and Ladha (2007) in a study they conducted which revealed that positive maternal influence had a strong affect on prosocial behaviour in childhood than did paternal influence, yet without either influence prosocial behaviour would be decreased. Hastings, Rubin and LeRose (2005) also found that maternal parenting had a positive effect on prosocial behaviour which was better absorbed by girls rather than boys in childhood, yet benefits boys greatly when in adolescence. Negative and aggressive parenting practices in childhood and adolescence are also positively correlated with impaired prosocial behaviour. McCoy, Cummins, and Davies (2009) found that marital conflict lowered a child’s prosocial behaviour an continued through development into adolescence. Berk (2008) describes how the development of empathy in early childhood enables children to take on another person`s perspective, and display prosocial behaviour in reaction to others. Wyatt & Carlo (2002) define prosocial moral reasoning as “thinking about situations in which one’s needs are in conflict with the needs of others in a context that is relatively free of formal rules, guidelines, or regulations” (p. 649). They continue to describe it within adolescence: “adolescent individuals are capable of expressing the range of prosocial moral-reasoning types, and these types have been linked to social behaviours. In general, more sophisticated levels of prosocial moral reasoning have been shown to predict higher levels of prosocial and lower levels of aggressive behaviour in adolescents” (p....