Assessing The Agonistic Continuum Scale as a measure of sexual sadism in a sample of community members and BDSM practitioners

Sexual sadism refers to a sexual preference for fantasies and behaviours involving the infliction of humiliation, degradation, and suffering onto others. The conceptualization of sexual sadism remains a contentious issue in the literature, with some believing sexual sadism is qualitatively distinct from other deviant sexual preferences, while others suggest it lies on a continuum of sexually aggressive behaviours. This second approach, known as the Agonistic Continuum, is a relatively novel conceptualization of sexual sadism. Its companion scale, The Agonistic Continuum Scale (TACS), was created to measure sexual sadism as a dimensional construct in both forensic and community samples. Despite several validation studies being conducted, the factor structure of the TACS has yet to be independently assessed. As such, the current study sought to assess the factorial validity and measurement invariance of the TACS in a community sample made up of primarily BDSM practitioners using a series of confirmatory factor analyses and latent profile analyses. 248 Canadian adults (65.3% females, 75.6% BDSM practitioners) completed a survey containing a demographic questionnaire and several measures of paraphilic interest including the TACS. Results of the factor analyses suggested a four-factor model provided the best fit to the data. However, incorporating sex as a multigroup analysis factor rendered this model a significantly worse fit. Further, latent profile analysis results supported the ability of the TACS to identify groups differing in sexual sadism severity but returned significantly different fit statistics across sex groups. Taken together, while the results of past studies were partially replicated, our findings call into question the appropriateness of the TACS in mixed-sex and non-community samples.