The research analyses cognitive attitudes and biases in people with victim mentality. The hypothesis that the study aims to test is that there is a correlation between the level of victimhood and the cognitive attitudes and biases that determine victim behaviour. Methodologically, the study relies on a range of tools, including the questionnaire “Predisposition to Victim Behaviour”, the Victim Mentality Questionnaire, the Dysfunctional Attitudes Scale and the adjusted REBT-test (rational emotive behaviour therapy). The study was conducted in 2018 in Russia and covered a sample of 106 people: 45 male and 61 female respondents aged 20-29. The hypothesis was confirmed and correlations were found between the type of victim behaviour, victim mentality, dysfunctional attitudes and irrational beliefs. Irrational beliefs are thus considered as victimogenic determinants correlating with the level of victimhood and forms of victim behaviour. These findings can be used to develop preventive and therapeutic strategies to help patients suffering from victim mentality and related problems. © 2021 Olga O. Andronnikova, Sergey I. Kudinov