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Summary : The Sexual Dysfunctional Beliefs Questionnaire (SDBQ) is a validated and widespread measure to assess dysfunctional sexual beliefs. The study aimed to test the psychometrics of the Italian version of the SDBQ. A total of 1009 participants (422 men and 587 women, 739 healthy and 270 complaining about sexual problems) took part in the current study. Principal component analysis identified 3 factors in the male version: macho beliefs, sexual conservatism and control over sexuality. In the female version 4 factors were found: sexual conservatism, affection primacy, control over sexuality and age related beliefs. Confirmatory factorial analyses supported the adequacy of the factor structure for both genders. SDBQ showed associations with sexual functioning, differentiating between clinical and control group. This measure is useful in the assessment of sexual dysfunctions, evaluating sexual beliefs and assisting with clinical interventions aimed to work on these vulnerabilities and maintaining factors for sexual problems.© 2018 Elsevier Masson SAS. All rights reserved.