Comparing Public Attitudes to Traditional Biomedical Vs Trauma-Informed Approaches in Psychosis Services

Objective Stigma is a significant barrier to engagement with psychosis services. This study explored whether trauma-informed mental health services are perceived as less stigmatising and more effective than traditional biomedical services, and examined individual-level predictors of such perceptions. Methods A cross-sectional online survey was conducted with 1,460 participants via Amazon Mechanical Turk. Respondents were randomly assigned to read one of two vignettes describing either a trauma-informed or traditional biomedical psychosis service. Attitudes toward the service were measured using service-related attitudinal questions grounded in the tripartite framework (Olson & Zanna, 1993) and informed by stakeholder perspectives. MANOVA compared differences across service-model vignettes. Exploratory factor analysis identified two latent factors, perceived stigma and service effectiveness, which were used as regression outcomes to determine individual predictors. Four hierarchical regressions investigated predictors of mental health attitudes and knowledge, adverse childhood experiences (ACE), and social desirability, and their impact on stigma and service effectiveness. Results Trauma-informed services were rated significantly less stigmatising and more effective across all dimensions (p < .001, η2 = .02–.10). Perceived stigma was strongly associated with positive mental health attitudes, greater ACE exposure, and liberal political orientation. Notably, mental health knowledge was linked to higher stigma, suggesting factual understanding alone may not reduce negative perceptions. Conclusions Trauma-informed services are perceived as less stigmatising and more effective than traditional biomedical models. Findings highlight the influence of individual attitudes and experiences on stigma, supporting contact-based, context-aware public campaigns to improve perceptions of psychosis and promote compassionate, trauma-informed mental health care.