Exploring Mechanisms of Measurement Discrepancy: Perceived Acceptability and Efficiency of Two Sexual Victimization Questionnaires
Background: Obtaining accurate prevalence rates of sexual violence is made difficult by discrepancies in self-reporting questionnaires. Thus, the current study sought to explore participants' perceptions of acceptability (i.e., perceived difficulty, readability, and preference) of questionnaires as an important psychometric indicator and a potential mechanism of discrepancy between different questionnaires assessing sexual victimization. Methods: Participants were 673 college students who completed the Sexual Experiences Survey-Short Form Victimization (SES-SFV) and the Post-Refusal Sexual Persistence Scales-Victimization (PRSPS-V). Participants then answered questions about each measure's perceived difficulty and their preference between the two. Flesch-Kincaid Reading Grade Level and efficiency (i.e., number of items: number of cases identified) were also analyzed. Results: Participants found the PRSPS-V easier to understand and preferred it 2.5 to1 over the SES-SFV. Preference was related to reporting; participants who preferred the PRSPS-V reported more instances of sexual victimization on the PRSPS-V. The PRSPS-V was objectively easier to comprehend according to Flesch-Kincaid levels and was two times more efficient than the SES-SFV in the number of cases detected per item administered. Conclusions: Our results indicate that acceptability impacts reported prevalence rates and is one mechanism for documented discrepancies between sexual violence questionnaires. Thus, it may behoove researchers to consider acceptability as a metric of interest when choosing sexual victimization questionnaires.