{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T15:42:11Z","timestamp":1785426131600,"version":"3.56.0"},"reference-count":24,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2026,4,27]],"date-time":"2026-04-27T00:00:00Z","timestamp":1777248000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Greek Ministry of Health"},{"name":"UNICEF"},{"id":[{"id":"https:\/\/ror.org\/03evrfb35","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005187","name":"National and Kapodistrian University of Athens","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100005187","id-type":"DOI","asserted-by":"crossref"}]},{"id":[{"id":"https:\/\/ror.org\/04gnjpq42","id-type":"ROR","asserted-by":"publisher"}]},{"name":"European Union\u2014NextGeneration EU"},{"id":[{"id":"https:\/\/ror.org\/019w4f821","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Children"],"abstract":"<jats:p>Background\/Objectives: The aim of this study was to translate, culturally adapt, and validate the updated (March 2025) version of the Modified Checklist for Autism in Toddlers, Revised, with Follow-Up (M-CHAT-R\/F) in Greek by examining its reliability, validity, and screening efficacy in a Greek sample. Methods: The M-CHAT-R\/F was administered to Greek parents\/primary caregivers of children aged 16\u201348 months, with no prior diagnosis of autism spectrum disorder (ASD), severe sensory impairments, or other chronic conditions causing neurodevelopmental delay. Parents\/primary caregivers were invited to participate in the nationwide Program \u201cChild and Family Health Promotion through the Paediatric Framework\u201d of the Greek Ministry of Health in collaboration with UNICEF, implemented by the National and Kapodistrian University of Athens. Results: The final sample comprised 280 parents of children 16 to 48 months old (mean age \u00b1 SD 24.64 \u00b1 7.75 months) with an almost equal sex distribution. Mean (\u00b1SD) parental age was 35.31 (\u00b13.14) years, ranging from 30 to 48 years, and most respondents were mothers (94.3%). The Greek M-CHAT-R\/F demonstrated acceptable reliability (KR-20 = 0.789) and acceptable scalability (monotonicity). Conclusions: The present study provides compelling evidence that the Greek M-CHAT-R\/F is a reliable, valid, culturally appropriate instrument for screening children for the presence of ASD. The psychometric properties of the Greek version are consistent with previous international reports and warrant its use in routine pediatric practice in Greece.<\/jats:p>","DOI":"10.3390\/children13050606","type":"journal-article","created":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T10:34:42Z","timestamp":1777458882000},"page":"606","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Validation of the Updated (March 2025) Modified Checklist for Autism in Toddlers, Revised, with Follow-Up (M-CHAT-R\/F) in Greek"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1001-0926","authenticated-orcid":false,"given":"Flora","family":"Bacopoulou","sequence":"first","affiliation":[{"name":"Clinic for Assessment of Learning Difficulties, Center for Adolescent Medicine and UNESCO Chair in Adolescent Health Care, First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens, Aghia Sophia Children\u2019s Hospital, 1 Thivon Street, 11527 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dimitrios","family":"Dimitriou","sequence":"additional","affiliation":[{"name":"Cyprus Developmental and Behavioral Pediatrics Society, 1083 Nicosia, Cyprus"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7791-7031","authenticated-orcid":false,"given":"Diana L.","family":"Robins","sequence":"additional","affiliation":[{"name":"AJ Drexel Autism Institute, Drexel University, Philadelphia, PA 19104-3734, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2981-1651","authenticated-orcid":false,"given":"Antonios I.","family":"Christou","sequence":"additional","affiliation":[{"name":"Department of Special Education, University of Thessaly, 38221 Volos, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Theodora","family":"Xenopoulou","sequence":"additional","affiliation":[{"name":"Developmental and Behavioral Pediatric Clinic, General Hospital of Nikaia\u2014Piraeus \u201cSt. Panteleimon\u201d, 18454 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christos","family":"Prapas","sequence":"additional","affiliation":[{"name":"Department of Public and Community Health, School of Public Health, University of West Attica, 11521 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3320-6588","authenticated-orcid":false,"given":"Vasiliki","family":"Efthymiou","sequence":"additional","affiliation":[{"name":"Clinic for Assessment of Learning Difficulties, Center for Adolescent Medicine and UNESCO Chair in Adolescent Health Care, First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens, Aghia Sophia Children\u2019s Hospital, 1 Thivon Street, 11527 Athens, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,4,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"American Psychiatric Association (2013). 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