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Despite widespread use, the psychometric properties of the BIS\/BAS Scales have yet to be evaluated in the autistic population. Therefore, this study sought to evaluate the factor structure and psychometric properties of the BIS\/BAS Scales in a sample of children and adolescents with autism. Parents of\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u2009709 autistic youth (M\n                    <jats:sub>age<\/jats:sub>\n                    [SD]\u2009=\u200911.22\u2009years [3.54]; 75% male) completed the BIS\/BAS Scales alongside additional convergent\/divergent validity measures. Factor structures ranging from one to eight specific factors were tested, including bifactor and hierarchical models with and without general factors. Measurement invariance was assessed across age groups (&lt;\u200912\u2009years vs. \u2265\u200912\u2009years) and gender. Convergent and divergent validity were evaluated using bivariate correlations. Results indicated that a five\u2010factor bifactor model\u2014comprising general BIS and BAS dimensions alongside specific BIS\u2010Fight\/Flight\/Freezing, BIS\u2010Worry, BAS\u2010Drive, BAS\u2010Reward Responsiveness, and BAS\u2010Fun Seeking factors\u2014exhibited best fit and measurement invariance. Factors showed strong construct validity through correlations with emotion problems, risk avoidance, response inhibition, neuroticism, shyness, activity, and extraversion. Findings support the BIS\/BAS Scales as a psychometrically sound measure of reward and punishment sensitivity in autistic youth. Further research is needed to confirm model generalizability, structural stability, and measurement invariance across both clinical and non\u2010clinical populations.\n                  <\/jats:p>","DOI":"10.1002\/aur.70171","type":"journal-article","created":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T08:55:42Z","timestamp":1767689742000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Factor Structure and Psychometric Properties of the\n                    <scp>BIS<\/scp>\n                    \/\n                    <scp>BAS<\/scp>\n                    Scales in Children and Adolescents With Autism"],"prefix":"10.1002","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9360-0851","authenticated-orcid":false,"given":"Lacey","family":"Chetcuti","sequence":"first","affiliation":[{"name":"Department of Psychiatry and Behavioral Sciences, School of Medicine Stanford University  Stanford California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonio","family":"Hardan","sequence":"additional","affiliation":[{"name":"Department of Psychiatry and Behavioral Sciences, School of Medicine Stanford University  Stanford California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2300-439X","authenticated-orcid":false,"given":"Emily","family":"Spackman","sequence":"additional","affiliation":[{"name":"Department of Psychiatry and Behavioral Sciences, School of Medicine Stanford University  Stanford California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luke","family":"Smillie","sequence":"additional","affiliation":[{"name":"Melbourne School of Psychological Sciences University of Melbourne  Melbourne Victoria Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6951-2667","authenticated-orcid":false,"given":"Thomas W.","family":"Frazier","sequence":"additional","affiliation":[{"name":"Department of Psychology John Carroll University  Cleveland Ohio USA"},{"name":"Department of Pediatrics and Psychiatry SUNY Upstate Medical University  Syracuse New York USA"},{"name":"Autism Speaks  New York New York USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8414-4209","authenticated-orcid":false,"given":"Mirko","family":"Uljarevic","sequence":"additional","affiliation":[{"name":"Department of Psychiatry and Behavioral Sciences, School of Medicine Stanford University  Stanford California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2026,1,6]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.rmal.2022.100005"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/27000710241308254"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuropsychologia.2015.10.025"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1037\/pspp0000395"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cpr.2009.04.002"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/dev.10103"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1089\/aut.2024.0202"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.paid.2017.07.043"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10803-010-1138-0"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10803-016-2827-0"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1037\/0022-3514.67.2.319"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1080\/10705510701301834"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1177\/1362361316660065"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/aur.70059"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cpr.2021.101984"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1111\/dmcn.16303"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1207\/S15328007SEM0902_5"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tics.2012.02.007"},{"key":"e_1_2_9_20_1","volume-title":"Social Responsiveness Scale\u2013Second Edition (SRS\u20102)","author":"Constantino J. 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