Psychometric Evaluation of the Heterosexist Harassment, Rejection, and Discrimination Scale: Identification of a Unidimensional 11-Item Scale

• Published in: Assessment (Odessa, Fla.) Fla.), 2024-11, p.10731911241293222
• Main Authors: Broshek, C E, Kurtz, A J, Udupa, N S, Chang, C J, Rogers, M L, Feinstein, B A, Selby, E A, Gratz, K L, Tull, M T, Joiner, T E, Jeon, M E
• Format: Article
• Language: English
• ISSN: 1073-1911; 1552-3489; 1552-3489
• DOI: 10.1177/10731911241293222

Despite the Heterosexist Harassment, Rejection, and Discrimination Scale (HHRDS) being a routinely used measure of discrimination, there is no current consensus regarding its fundamental psychometric properties. This study sought to: (a) test the dimensionality of the scale using a classical test theory approach, and (b), if lacking a clear multidimensional structure, use an item response theory approach to develop a concise unidimensional measure and examine differential item and test functioning across various identity factors. In a sample of sexual minority adults (  = 1,243), evaluation of the HHRDS supported a reduced 11-item unidimensional measure. Assessment of differential item functioning suggested differences for some items between cisgender men and cisgender women, cisgender men and gender-diverse individuals, gay/lesbian and bi+ individuals, and white/non-Latine individuals and people of color. However, differential item functioning had minimal impact on total test scores, supporting the use of the revised 11-item HHRDS across groups.