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However, no study has systematically evaluated its measurement invariance (MI) between (a) individuals with and without a diagnosis of social anxiety disorder (SAD) and (b) males and females. The current study addresses this issue.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We collected data on 257 (158 females) Italian individuals diagnosed with SAD and 356 (232 females) community\u2010dwelling adults.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We initially found support for the unidimensionality of the Italian LSAS\u2010SR measurement model in all samples. Using the Graded Response Model, we obtained evidence of partial MI and differential item functioning between community\u2010dwelling and SAD\u2010diagnosed individuals and evidence of strong MI between male and female participants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The results of this study suggest that the Italian LSAS\u2010SR measures the same trait in the same way across the symptom continuum and sexes, making it a psychometrically sound tool for assessment, screening, and research purposes.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jclp.23413","type":"journal-article","created":{"date-parts":[[2022,7,9]],"date-time":"2022-07-09T19:24:46Z","timestamp":1657394686000},"page":"391-414","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Measurement invariance of the Liebowitz Social Anxiety Scale\u2010Self\u2010Report"],"prefix":"10.1002","volume":"79","author":[{"given":"Duccio","family":"Baroni","sequence":"first","affiliation":[{"name":"Department of Education,\u00a0Languages, Intercultures, Literatures and Psychology University of Florence Florence Italy"},{"name":"Department of Health Sciences University of Florence Florence Italy"},{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura","family":"Caccico","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Serena","family":"Ciandri","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cristian","family":"Di Gesto","sequence":"additional","affiliation":[{"name":"Department of Health Sciences University of Florence Florence Italy"},{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura","family":"Di Leonardo","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alice","family":"Fiesoli","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena","family":"Grassi","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesco","family":"Lauretta","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonella","family":"Lebruto","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicola","family":"Marsigli","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giulia Rosa","family":"Policardo","sequence":"additional","affiliation":[{"name":"Department of Health Sciences University of Florence Florence Italy"},{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martina","family":"Rosadoni","sequence":"additional","affiliation":[{"name":"Institute of Behavioral and Cognitive Psychology and Psychotherapy Florence Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1640-3897","authenticated-orcid":false,"given":"Carlo","family":"Chiorri","sequence":"additional","affiliation":[{"name":"Department of Educational Sciences University of Genova Genova Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,7,9]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.janxdis.2012.01.003"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.books.9780890423349"},{"key":"e_1_2_8_4_1","doi-asserted-by":"crossref","unstructured":"American Psychiatric Association. 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