Universiteit Leiden

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Research project

Involvement in Bullying and Personality


Paul Vedder


Bullying has been defined as a repetitive act of physical or verbal harassment towards a victim that is of inferior power. Being the victim of bullying is related to depression, psychosomatic symptoms and suicidality.

In the current study, we analyze how bullying is related to personality in adolescents. We focus on the so-called ‘Dark Tetrad’; Machiavellianism (calculating and manipulative) Narcissism (grandiose with low regard for others) Psychopathy (cold and uncaring towards others) and Sadism (taking delight in suffering and misery of others). Furthermore, we aim to analyze how Big Five personality traits are related to specific roles in the bullying process

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