“…There is a large body of research that suggests that dehumanisation of out-groups is prevalent across cultures, population characteristics, social identities and medical diagnoses (Kteily and Bruneau, 2017), but our work is one of the few that has examined this in relation to PWUD and more specifically heroin use. Our findings extend previous research that has consistently found that diverse groups, including the general public and law enforcement, health and social care professionals, stigmatise PWUD (Lloyd, 2013) or blatantly dehumanise them (Harris and Fiske, 2006; Boysen et al , 2020; Fontesse et al , 2021). As we found differences in dehumanisation scores towards heroin and cannabis users compared to reference groups, our study confirms previous research, including survey and qualitative research, that suggests stigmatising attitudes are drug dependent and are not simply a function of the use of controlled substances (e.g.…”