There is also some empirical evidence to support the notion that cyberbullying is not merely bullying in cyberspace but a unique phenomenon. The correlations between conventional bullying and cyberbullying are generally only of moderate effect size (see above). This indicates that there are a significant number of adolescents who are only involved in cyberbullying, but not in conventional bullying. Factor analyses demonstrate that acts of cyber aggression load on a unique factor compared with other acts of adolescent aggression. Additionally, there are cyber-specific risk factors for cyberbullying that are not relevant for conventional bullying. For example, both cyber-victimization and cyber-perpetration are related to more computer proficiency, more frequent internet use, more frequent use of electronic communication tools, and more frequet internet risk behavior. Despite these findings, research into cyber-specific aspects of cyberbullying is still at its beginning.