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Despite advances in the conceptualization of narcissism, including the increasing recognition that narcissism is a multidimensional construct, the sources of this heterogeneity remain poorly understood. Here, we used a neural trait approach to help better understand \u201chow,\u201d and shed light on \u201cwhy,\u201d individuals vary in facets of trait narcissism. Participants (\n                    <jats:italic>N<\/jats:italic>\n                    \u00a0=\u200958) first completed personality measures, including the Narcissistic Personality Inventory (NPI), and then in a second session sat passively while resting\u2010state electroencephalography (rs\u2010EEG) was recorded. We then regressed source\u2010localized rs\u2010EEG activity on the distinct facets of narcissism: Grandiose Exhibitionism (GE), Entitlement\/Exploitativeness (EE), and Leadership\/Authority (LA). Results revealed that each facet was associated with different (though sometimes overlapping) neural sources. Specifically, GE was associated with reduced activation in the dorsomedial prefrontal cortex (DMPFC). EE was associated with reduced activation in the DMPFC and right lateral PFC. LA was associated with increased activation in the left anterior temporal cortex. These findings support the idea that trait narcissism is a multidimensional construct undergirded by individual differences in neural regions related to social cognition (the DMPFC), self\u2010regulation (right lateral PFC), and self\u2010referential processing (left anterior temporal cortex).\n                  <\/jats:p>","DOI":"10.1111\/ejn.16479","type":"journal-article","created":{"date-parts":[[2024,7,28]],"date-time":"2024-07-28T22:14:31Z","timestamp":1722204871000},"page":"4907-4921","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Neural rhythms of narcissism: Facets of narcissism are associated with different neural sources in resting\u2010state EEG"],"prefix":"10.1111","volume":"60","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7714-4630","authenticated-orcid":false,"given":"Josh","family":"Leota","sequence":"first","affiliation":[{"name":"Turner Institute for Brain and Mental Health Monash University  Melbourne Australia"},{"name":"School of Psychological Sciences Monash University  Melbourne Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paige","family":"Faulkner","sequence":"additional","affiliation":[{"name":"Department of Psychology University of Alberta  Edmonton AB Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shafa","family":"Mazidi","sequence":"additional","affiliation":[{"name":"Department of Psychology University of Alberta  Edmonton AB Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Simpson","sequence":"additional","affiliation":[{"name":"Department of Psychology University of Alberta  Edmonton AB Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0461-3835","authenticated-orcid":false,"given":"Kyle","family":"Nash","sequence":"additional","affiliation":[{"name":"Department of Psychology University of Alberta  Edmonton AB Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,7,28]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/YCO.0000000000000463"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/1073191110382845"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jrp.2005.03.002"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1038\/nrn1884"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1089\/cyber.2019.0744"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tics.2004.02.010"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.paid.2016.03.026"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-018-36956-2"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.2517-6161.1995.tb02031.x"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.paid.2016.04.025"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.paid.2016.07.020"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.0924-07.2007"},{"key":"e_1_2_12_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.conb.2010.03.002"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1080\/15298868.2019.1645730"},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpsyg.2015.00881"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cpr.2007.09.006"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.1080\/15298860802505129"},{"key":"e_1_2_12_19_1","first-page":"115","volume-title":"The Self","author":"Campbell W. 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