The Self-Dehumanization Scale: Three Studies on Its Development and Validation.

Self-dehumanization, a phenomenon relevant to social psychology, has been somewhat absent from clinical psychology research. Furthermore, measures of self-dehumanization are few, and to our knowledge, no validated and generalizable self-report measure exists. To address this gap, we present a Self-Dehumanization Scale (SDS). This work incorporates evidence from three studies examining the reliability, validity, and factor structure of the SDS in an undergraduate sample, a clinically relevant community sample, and a sample with at least one minoritized identity. The SDS was derived from dehumanization theory and was developed to measure animalistic and mechanistic self-dehumanization. All studies suggested an 8-item SDS, with Study 1 suggesting a single-factor solution with, however, some indication of a two-factor structure, and Studies 2 and 3 affirming a two-factor solution. The SDS, and its respective factors, generally showed discriminant validity from related, yet distinct, measures of self-hate, self-esteem (Study 2), dissociation, and measures of discrimination (in Study 3). Finally, animalistic and mechanistic SDS showed somewhat mixed but promising evidence regarding their associations to minoritized identities and to symptoms of depression, and suicide risk, above and beyond each study's fairly stringent control variables. Thus, self-dehumanization may prove to be a clinically promising leverage point in assessing psychopathology, particularly among minoritized communities.