[What makes someone a troll? The psychology of trolling: Systematic literature review].

Background: The World Wide Web along with online social media has significantly changed the dynamics of communication. Information is easier and faster to access, but at the same time the relevance of the content often remains questionable, often confronting users with half-truths and untruths. Information consumption patterns have also changed a lot, allowing more room for the emergence of deviant, provocative behaviors through anonymity. The latter form of behavior can have different effects depending on its intensity and content, including, the polarization of opinions or the negative influence on users 'psychological wellbeing'. In our current article the literature on the pheno menon known as trolling in Internet slang was reviewed in order to better understand its nature and its possible effects.

Method: Our systematic literature review was based on a computer search of the PubMed and ScienceDirect databases framed by the PRISMA guideline. The following keywords were used: "Internet" OR "Facebook" OR "Twitter" OR "Instagram" AND "troll" OR "trolling".

Result: Based on the mentioned methon, a total number of 4575 articles were identified. Based on the inclusion and exclusion criteria 24 articles were included in the final sample. The results and experiences of the published papers were presented according to the subgroups formed on the basis of the purpose of the studies.

Conclusion: Included articles focused primarily on understanding the motivation of trolling behavior and their impact on online behavior. However, the possible impact of trolls on individuals was left out of focus, leaving many open questions behind.