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Dimensional measures of behaviour and brain activity are promising targets for studying biological mechanisms that are common across disorders. Here, we assessed the extent to which neural measures of the sensitivity of the three biological systems in the reinforcement sensitivity theory (RST) could account for individual differences in a latent general factor estimated from symptom counts across externalising disorders (EXTs). RST explanatory power was pitted against reduced P300, a reliable indicator of externalising per previous research. We assessed 206 participants for DSM-5 EXTs (antisocial personality disorder, conduct disorder, attention-deficit\/hyperactivity disorder, intermittent explosive disorder symptoms, alcohol use disorder, and cannabis use disorder). Of the final sample, 49% met diagnostic criteria for at least one of the EXTs. Electroencephalographic measures of the sensitivities of the behavioural activation system (BAS), the fight\/flight\/freeze system, and the behavioural inhibition system (BIS), as well as P300 were extracted from the gold bar-lemon and stop-signal tasks. As predicted, we found that low neural BIS sensitivity and low P300 were uniquely and negatively associated with our latent factor of externalising. Contrary to prediction, neural BAS\/\u201cdopamine\u201d sensitivity was not associated with externalising. Our results provide empirical support for low BIS sensitivity and P300 as neural mechanisms common to disorders within the externalising spectrum; but, given the low N involved, future studies should seek to assess the replicability of our findings and, in particular, the differential involvement of the three RST systems.<\/jats:p>","DOI":"10.1017\/pen.2023.11","type":"journal-article","created":{"date-parts":[[2024,4,23]],"date-time":"2024-04-23T08:55:43Z","timestamp":1713862543000},"source":"Crossref","is-referenced-by-count":4,"title":["Midfrontal conflict theta and parietal P300 are linked to a latent factor of DSM externalising disorders"],"prefix":"10.1017","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1412-3100","authenticated-orcid":false,"given":"Phoebe S.-H.","family":"Neo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4348-8221","authenticated-orcid":false,"given":"Neil","family":"McNaughton","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Sellbom","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2024,4,23]]},"reference":[{"key":"S2513988623000111_ref51","doi-asserted-by":"publisher","DOI":"10.1016\/j.cobeha.2021.11.005"},{"key":"S2513988623000111_ref39","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.clinpsy.2.022305.095213"},{"key":"S2513988623000111_ref17","first-page":"220","volume-title":"The Oxford handbook of externalizing spectrum disorders","author":"Corr","year":"2016"},{"key":"S2513988623000111_ref77","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-6494.2005.00369.x"},{"key":"S2513988623000111_ref81","doi-asserted-by":"publisher","DOI":"10.1093\/scan\/nsu022"},{"key":"S2513988623000111_ref47","doi-asserted-by":"publisher","DOI":"10.1007\/7854_2019_125"},{"key":"S2513988623000111_ref67","doi-asserted-by":"publisher","DOI":"10.1162\/jocn.2006.18.7.1112"},{"key":"S2513988623000111_ref48","doi-asserted-by":"publisher","DOI":"10.1038\/nature08028"},{"key":"S2513988623000111_ref53","doi-asserted-by":"publisher","DOI":"10.1016\/j.jad.2012.11.057"},{"key":"S2513988623000111_ref3","volume-title":"MMPI-3: Minnesota multiphasic personality inventory-3 technical manual","author":"Ben-Porath","year":"2020"},{"key":"S2513988623000111_ref16","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9780511819384.006"},{"key":"S2513988623000111_ref19","doi-asserted-by":"publisher","DOI":"10.3389\/fnhum.2013.00762"},{"key":"S2513988623000111_ref57","doi-asserted-by":"publisher","DOI":"10.3389\/fnins.2020.00342"},{"key":"S2513988623000111_ref43","doi-asserted-by":"publisher","DOI":"10.1038\/s41386-020-0639-6"},{"key":"S2513988623000111_ref69","doi-asserted-by":"publisher","DOI":"10.1016\/j.jrp.2013.05.009"},{"key":"S2513988623000111_ref76","doi-asserted-by":"publisher","DOI":"10.1016\/j.biopsycho.2019.107735"},{"key":"S2513988623000111_ref82","doi-asserted-by":"publisher","DOI":"10.1177\/2167702618757690"},{"key":"S2513988623000111_ref89","first-page":"201","volume-title":"The Oxford handbook of externalizing spectrum disorders","author":"Zisner","year":"2015"},{"key":"S2513988623000111_ref18","doi-asserted-by":"publisher","DOI":"10.1017\/S0140525X99002046"},{"key":"S2513988623000111_ref13","doi-asserted-by":"publisher","DOI":"10.3389\/fnhum.2014.00248"},{"key":"S2513988623000111_ref80","doi-asserted-by":"publisher","DOI":"10.1177\/1073858406298184"},{"key":"S2513988623000111_ref65","doi-asserted-by":"publisher","DOI":"10.1007\/7854_2020_143"},{"key":"S2513988623000111_ref4","doi-asserted-by":"publisher","DOI":"10.1111\/psyp.13618"},{"key":"S2513988623000111_ref34","doi-asserted-by":"publisher","DOI":"10.1017\/S0033291722001301"},{"key":"S2513988623000111_ref36","doi-asserted-by":"publisher","DOI":"10.1037\/0021-843X.111.3.411"},{"key":"S2513988623000111_ref70","doi-asserted-by":"publisher","DOI":"10.1038\/nrn.2015.26"},{"key":"S2513988623000111_ref78","volume-title":"Manual for the state-trait anxiety inventory (form Y)","author":"Spielberger","year":"1983"},{"key":"S2513988623000111_ref86","unstructured":"World Health Organization. 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