Am I being dehumanized? Development and validation of the experience of dehumanization measurement.

Scholarly interest in the experience of dehumanization, the perception that one is being dehumanized, has increased significantly in recent years, yet the construct lacks a validated measurement. The purpose of this research is therefore to develop and validate a theoretically grounded experience of dehumanization measurement (EDHM) using item response theory. Evidence from five studies using data collected from participants in the United Kingdom (N = 2082) and Spain (N = 1427), shows that (a) a unidimensional structure replicates and fits well; (b) the measurement demonstrates high precision and reliability across a broad range of the latent trait; (c) the measurement demonstrates evidence for nomological and discriminant validity with constructs in the experience of dehumanization nomological network; (d) the measurement is invariant across gender and cultures; (e) the measurement demonstrates incremental validity in the prediction of important outcomes over and above conceptually overlapping constructs and prior measurements. Overall, our findings suggest the EDHM is a psychometrically sound measurement that can advance research relating to the experience of dehumanization.