Percorrer por autor "Salvado, Sara Guilhoto"
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- Prejudice against Bisexual People Scale (EPPB): Validation for Portugal and impact on discrimination by mental health care professionalsPublication . Salvado, Sara Guilhoto; Bú, Emerson Araújo DoBinegativity, a persistent yet understudied form of sexual prejudice, reflects the stereotypes, discrimination, and social exclusion directed toward bisexual individuals. Despite advances in LGBTQIA+ research in Portugal, bisexual prejudice remains largely unexplored, articularly from the perspective of those who hold and enact it. This dissertation aimed to adapt and validate the Escala de Preconceito contra Pessoas Bissexuais (EPPB), a culturally and linguistically appropriate measure assessing prejudice toward bisexual people within the Portuguese context. Drawing on Nery et al. (2023) Brazilian version, the EPPB was reformulated into three gender-specific subscales targeting attitudes toward bisexual women (EPPB-W), bisexual men (EPPB-M), and bisexual people (EPPB-P) more broadly. Across four studies, rigorous psychometric evidence was gathered for the scale’s validity and reliability. Studies 1A (n = 19) and 1B (n = 100) established content validity through expert evaluation and pre-testing with the general population, ensuring theoretical coherence and linguistic clarity. Study 2 (n = 300) identified the (one)factorial structure of the EPPB and demonstrated strong internal consistency and item discrimination. Also, this study provided additional support for convergent and discriminant validity of the instrument. Study 3 (n = 204) confirmed this structure via confirmatory factor analysis and replicated reliability. Study 4 (n = 209 mental-health practitioners) demonstrated criterion validity: higher binegativity predicted gender-differentiated referral wait times (shorter for men than for women). Collectively, these studies provide compelling evidence for the EPPB’s psychometric robustness and theoretical relevance, offering a novel tool to examine how binegativity operates across gender and social contexts in Portugal.