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To date, however, no psychometrically validated Dutch language version has been available in research or clinical settings. This study developed and validated the Dutch version of the 60\u2010item FFNI\u2010SF (FFNI\u2010SF\u2010NL), examining its reliability, factor structure, and convergent and discriminant validity following a preregistered analysis plan. A sample of 223 adult Dutch\u2010speaking participants, comprising 80 patients with personality disorders or individuals receiving mental health care and 143 non\u2010clinical participants, completed the FFNI\u2010SF\u2010NL. While strict confirmatory factor analysis showed poor model fit for the proposed two\u2010 and three\u2010factor models, subsequent exploratory factor analysis and exploratory structural equation modeling supported a three\u2010factor structure that closely replicated the modern trifurcated conceptualization of narcissism. The FFNI\u2010SF\u2010NL vulnerable and grandiose composites and agentic extraversion, self\u2010centered antagonism, and narcissistic neuroticism factors demonstrated adequate to good reliability and strong external construct validity, with correlations between its dimensions and other narcissism measures, personality traits, and psychological distress aligning closely with theoretical expectations specified a priori. Clinical participants showed higher vulnerable narcissism and narcissistic neuroticism scores, whereas non\u2010clinical participants showed higher grandiose narcissism and agentic extraversion scores, providing preliminary support for the clinical relevance of distinguishing FFNI\u2010SF\u2010NL narcissism dimensions. These results support the FFNI\u2010SF\u2010NL as a reliable and valid multidimensional measure capturing nuanced expressions of narcissistic traits in both clinical and non\u2010clinical Dutch\u2010speaking populations, facilitating future research and clinical practice.<\/jats:p>","DOI":"10.1002\/pmh.70090","type":"journal-article","created":{"date-parts":[[2026,6,27]],"date-time":"2026-06-27T06:12:38Z","timestamp":1782540758000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Psychometric Properties of the Dutch Short Form of the Five\u2010Factor Narcissism Inventory"],"prefix":"10.1002","volume":"20","author":[{"given":"Etelka J.","family":"Harmsen","sequence":"first","affiliation":[{"name":"Stichting Dimence Groep  Deventer the Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2565-5439","authenticated-orcid":false,"given":"Peter M.","family":"ten Klooster","sequence":"additional","affiliation":[{"name":"Department of Psychology, Health and Technology University of Twente  Enschede the Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1280-2863","authenticated-orcid":false,"given":"Joshua D.","family":"Miller","sequence":"additional","affiliation":[{"name":"Department of Psychology University of Georgia  Athens Georgia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8306-498X","authenticated-orcid":false,"given":"Donald R.","family":"Lynam","sequence":"additional","affiliation":[{"name":"Department of Psychological Sciences Purdue University  West Lafayette Indiana USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6929-0331","authenticated-orcid":false,"given":"Farid","family":"Chakhssi","sequence":"additional","affiliation":[{"name":"Stichting Dimence Groep  Deventer the Netherlands"},{"name":"Department of Psychology, Health and Technology University of Twente  Enschede the Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,26]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1080\/10705510903008204"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1037\/a0034431"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.18502\/ijps.v18i2.12368"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467\u20109450.2009.00737.x"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0191\u20108869(90)90065\u2010Y"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cpr.2007.09.006"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1037\/0022\u20103514.66.1.93"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1037\/1040\u20103590.6.4.284"},{"key":"e_1_2_8_10_1","volume-title":"Statistical Power Analysis for the Behavioral Sciences","author":"Cohen J.","year":"1988"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1037\/0033\u20102909.112.1.155"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1111\/jopy.12464"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11409\u2010016\u20109159\u20105"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1080\/00223890701845229"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1037\/pspp0000370"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/pmh.92"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1080\/00223891.2017.1324457"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1037\/a0033192"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1080\/00223891.2012.670680"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/0895\u20104356(93)90142\u2010n"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.18148\/srm\/2008.v2i3.1669"},{"key":"e_1_2_8_22_1","volume-title":"Translation and Validation of the Dutch Short Form of the Five Factor Narcissism Inventory: The FFNI\u2010SF\u2010NL, and Its Associations With Self\u2010Criticism, Shame and Self\u2010Compassion","author":"Harmsen E. 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