Testing the internal consent scale for measurement invariance across women and men

Willis, M. , Jozkowski, K. N. and Marcantonio, T. L. (2022) Testing the internal consent scale for measurement invariance across women and men. Sex Roles, 86(11-12), pp. 711-721. (doi: 10.1007/s11199-022-01287-0)

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The Internal Consent Scale (ICS) was created to measure feelings associated with a person’s willingness to engage in partnered sexual activity. Although previous studies using the ICS have assessed gender differences, evidence has not been provided to suggest that the ICS functions similarly for women and men. Using data from an online cross-sectional survey of adults (N = 874; 53.1% women), we subjected the 25-item ICS to tests of measurement invariance across gender. We found that only partial measurement invariance was tenable, which indicated that direct comparisons across gender should be interpreted with caution when using the ICS. Therefore, we created a gender-invariant short form. In support of construct validity, we found that this 15-item ICS–Short Form demonstrated similar associations with measures of sexual consent communication as the full 25-item ICS. If researchers aim to compare women and men on internal sexual consent, we recommend using the 15-item ICS–Short Form. Cognitive interviews should be conducted to further understand how women and men might differentially interpret ICS items.

Item Type:Articles
Additional Information:Funding: This research was funded in part by the Institute for Lifecourse Development at the University of Greenwich. This work was also supported by the United Kingdom Medical Research Council (MC_UU_00022/3) and the Scottish Government Chief Scientist Ofce (SPHSU18).
Glasgow Author(s) Enlighten ID:Willis, Dr Malachi
Creator Roles:
Willis, M.Conceptualization, Methodology, Formal analysis, Investigation, Writing – original draft, Project administration, Funding acquisition
Authors: Willis, M., Jozkowski, K. N., and Marcantonio, T. L.
College/School:College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > MRC/CSO SPHSU
Journal Name:Sex Roles
ISSN (Online):1573-2762
Published Online:19 May 2022
Copyright Holders:Copyright © The Author(s) 2022
First Published:First published in Sex Roles 86(11-12): 711-721
Publisher Policy:Reproduced under a Creative Commons licence

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
3048231Relationships and healthKirstin MitchellMedical Research Council (MRC)MC_UU_00022/3HW - MRC/CSO Social and Public Health Sciences Unit
3048231Relationships and healthKirstin MitchellOffice of the Chief Scientific Adviser (CSO)SPHSU18HW - MRC/CSO Social and Public Health Sciences Unit