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The measure was reliable and positively correlated with some maladaptive personality trait domains (PID\u20105\u2010BF), Depression (BDI\u2010II), and Hopelessness (BHS) in both groups, with higher scores observed in the clinical sample. However, low correlations were found between the HQ\u201025\u2010I and the PID\u20105\u2010BF Detachment and Negative Affectivity.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The results from the study showed that the HQ\u201025\u2010I\u00a0is\u00a0reliable, but further examination of its validity is warranted. Implications for theory and future research are discussed.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jclp.23404","type":"journal-article","created":{"date-parts":[[2022,6,16]],"date-time":"2022-06-16T16:34:25Z","timestamp":1655397265000},"page":"210-227","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Validation of the Italian version of the 25\u2010item Hikikomori Questionnaire (HQ\u201025\u2010I)"],"prefix":"10.1002","volume":"79","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5095-6014","authenticated-orcid":false,"given":"Emanuele","family":"Fino","sequence":"first","affiliation":[{"name":"NTU Psychology Nottingham Trent University Nottingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6572-0768","authenticated-orcid":false,"given":"Paolo","family":"Iliceto","sequence":"additional","affiliation":[{"name":"S&amp;P Statistics and Psychometrics Ltd Rome Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0176-266X","authenticated-orcid":false,"given":"Antonino","family":"Carcione","sequence":"additional","affiliation":[{"name":"Third Centre of Cognitive Psychotherapy Rome Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eleni","family":"Giovani","sequence":"additional","affiliation":[{"name":"Private Practice Rome Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4618-105X","authenticated-orcid":false,"given":"Gabriella","family":"Candilera","sequence":"additional","affiliation":[{"name":"S&amp;P Statistics and Psychometrics Ltd Rome Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,6,16]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.books.9780890425596"},{"key":"e_1_2_11_3_1","volume-title":"Manual for the Beck Hopelessness Scale (BHS)","author":"Beck A. 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