The aim of this study was to examine direct effects of Big five personality traits on the parents’ and their children attitudes towards disabled people as well as to examine whether or not the parents mediate in these attitudes through contact, awareness and right wing authoritarianism. Furthermore, this research aimed to examine the relation between the parents’ personality traits and their attitudes towards disabled people and their children’s attitudes towards this stigmatised group. The last problem of research was to compare social distances toward different stigmatized groups. This research included 450 examinees, but 333 of them were included in the statistical data processing, i.e. 111 students attending 7th and 8th primary school grades as well as their parents (111 mothers and 111 fathers). Out of 111 students, 62 of them are female and 49 male students. The children and the parents filled in a short scale of contacts with disabled people, followed by scales of attitudes towards disabled people, the level of awareness, adjective measure of Big five factor personality model, and social acceptance of stigmatised groups. Other than these, parents have also filled in a scale of right wing authoritarianism. The children filled in the questionnaires in school, with the given time of 45 minutes. The parents filled in the questionnaires at home. The given results displayed that the attitudes of both children and parents are greatly and directly influenced by the Big five factor personality traits. The results have shown that the awareness is a mediator in the relation between the parents’ personality traits and their attitudes towards disabled people, especially with conscientiousness, neuroticism, and open-mindedness to experiences with attitudes. None of the assumed variables in relation between the children’s personality traits and their attitudes confirmed mediation effect. Also, the results have shown that the parents’ personality traits and attitudes do not hold a crucial role in forming the attitudes of their children in preadolescent age towards disabled people. Social distances to people with disabilities are lower in compare to other stigmatized groups.