4 Ellie Oppenheim et al. opposite is true for high dominance (Nysæter et al., 2009), with high dominance individuals more sensitive to cues signalling opportunities and threats to power (McClelland, 1985; Winter, 1992). Research indicates agreeableness is associated with positive attitudes towards migrants (Dinesen et al., 2014; Ackermann and Ackermann, 2015; Freitag and Rapp, 2015; Talay and De Coninck, 2020). Aims and hypotheses This study aims to examine the social policy attitudes and prejudice levels of the UK public towards stateless people and to capture variables associated these attitudes. It aims to compare these findings to those relating to asylum seekers and refugees. We hypothesised that: (i) more affiliative and less dominant interpersonal styles will be associated with more positive attitudes towards stateless people, as measured by less restrictive social policy attitudes and lower prejudice towards stateless people; (ii) more right-wing political orientation will be associated with more negative attitudes towards stateless people, as measured by restrictive social policy attitudes and greater prejudice towards stateless people, (iii) participants who have personal migration experience and/or previous contact with stateless people, asylum seekers or refugees will show more positive attitudes towards stateless people, as measured by less-restrictive social policy attitudes and lower prejudice towards stateless people; (iv) greater perceived threat will be associated with more negative attitudes towards stateless people, as measured by restrictive social policy attitudes and greater prejudice towards stateless people; (v) social policy attitudes towards asylum seekers and stateless people will be more restrictive than those towards refugees; and (vi) prejudice towards asylum seekers and stateless people will be greater than prejudice towards refugees. Methods Ethical approval Ethical approval was obtained via the University College London Research Ethics Committee to undertake this project (Reference Number: 22223/001). Design The study used a cross-sectional design. Key variables captured included measures of attitude (prejudice and social policy attitude); demographic variables; and other variables including, perceived threat, interpersonal style, political orientation, previous contact with refugees, asylum seekers and stateless people, and personal migration experience. The study was pre-registered (https://aspredicted.org/k9bz4.pdf ). There was a deviation from the pre-registered analytic plan, which made a hypothesis around personality traits. This was removed given overlap with interpersonal styles. Participants A total of 385 UK residents aged eighteen or above participated in this study. Participants who skipped more than or equal to 10 per cent of the questionnaire (n = 29) were excluded from analysis, leaving 356 participants. The sample (n = 356) comprised 48.9 per cent men, 49.7 per cent women, and 1.4 per cent non-binary people. The sample was 86.8 per cent White, with Asian and Asian UK the next most common ethnicity (6.2 per cent). Also, 44.4 per cent of the sample had secondary level or no formal education, and 40.4 per cent had university-level qualifications. 66 per cent were in employment. Full demographic information is outlined in the supplementary materials. Participants were recruited through Prolific (https://www.prolific.co), an online, https://doi.org/10.1017/S147474642510119X Published online by Cambridge University Press