doi:10.1002/jclp.70114engCastro-Calvo, J.Giménez-García, C.Ruiz-Palomino, E.Gil-Juliá, B.García-Barba, M.Ballester-Arnal, R.The Semi‐Structured Clinical Interview for the Assessment of Compulsive Sexual Behavior (SSCI‐CSB): Development, Reliability, and ValidityART-2026-148463Objectives The assessment of Compulsive Sexual Behavior (CSB) requires fine-grained assessment approaches, ideally through clinical interviews. However, none of the few available clinical interviews for CSB have demonstrated strong psychometric properties. To address this limitation, we developed the Semi-Structured Clinical Interview for the assessment of CSB (SSCI-CSB), an interview that gathers information on the manifestations, symptoms, and clinical course of CSB. The aim of this study was to examine its reliability and validity in a sample of patients seeking treatment for out-of-control sexual behavior. Methods The SSCI-CSB was administered as a routine assessment to a sample of 85 patients (81 men, four women) seeking outpatient treatment for CSB in two moments: at an initial screening (n = 85) and after 3 months (n = 22). Results Of the 16 CSB criteria assessed by the SSCI-CSB, four were endorsed by < 40% of the participants. Internal consistency was excellent (α = 0.95; ω = 0.97). Similarly, test-retest reliability was high (r of 0.882 and Kappa in the range of fair-to-almost-perfect agreement). The SSCI-CSB showed more specificity/positive predictive value than sensitivity/negative predictive value. Conclusion The SSCI-CSB may be an appropriate assessment tool to assess and diagnose CSB in the round in patients seeking treatment for out-of-control sexual behaviors.2026http://zaguan.unizar.es/record/16993910.1002/jclp.70114http://zaguan.unizar.es/record/169939oai:zaguan.unizar.es:169939info:eu-repo/grantAgreement/ES/AEI/PID2021-127353OB-I00JOURNAL OF CLINICAL PSYCHOLOGY (2026), [17 pp.]by-nc-ndhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.esinfo:eu-repo/semantics/openAccess