Dark Triad Dirty Dozen

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The Dark Triad Dirty Dozen (DTDD) is a brief 12-question personality inventory test to assess the possible presence of the three subclinical dark triad traits: Machiavellianism, narcissism, and psychopathy. [1] The DTDD was developed to identify the dark triad traits among subclinical adult populations. It is a screening test. High scores on the DTDD do not necessary correlate with clinical diagnoses. [2]

Contents

Validity

Jonason and Webster conducted several validity tests of the DTDD as part of its development. [1] Relevant outcomes have all shown statistically significance weaknesses.

Other researchers have also conducted validity tests. Below are the examples of the findings:

Reliability

In their first publication of DTDD, Jonason and Webster have reported overall good reliability of the personality scale:

Structure

The DTDD consists of 4 items per subscale (i.e. Machiavellianism, narcissism, and psychopathy). Responses are rated on a 7-point Likert scale, wherein 1 implies a strong disagreement and the opposite for 7. The Machiavellianism items assess characteristics such as manipulativeness, deceitfulness, and likelihood of employing flattery and exploitation for personal gain. The narcissism items are concerned with whether the individual seeks admiration, attention, status, and favours from others. The psychopathy items focus on features such as amorality, cynicism, callousness, and lack of remorse. [1]

A diagram of the bi-factor model of the DTDD. Bi-factor model of the Dark Triad Dirty Dozen scale.png
A diagram of the bi-factor model of the DTDD.

Theoretically, the three dark triad traits are treated as separate, but related constructs. [6] In parallel with the factor structure of the dark triad traits, traditional tests of these traits measure each trait independently (e.g. NPI, SRP-III, Mach IV). Due to the DTDD's ability to measure all three constructs simultaneously, researchers have been inquiring whether the DTDD should be better conceptualised as a scale measuring a unitary factor, that is, a composite dark triad trait, or as a scale that measures three distinct but correlating factors. [1] It has been previously demonstrated that the three-factor model (i.e. a scale measuring Machiavellianism, narcissism, and psychopathy) was more appropriate match for the DTDD more than the single-factor model (i.e. a scale measuring a compound dark triad factor). [1] However further research on the DTDD's factor structure displayed that a bi-factor model yielded the most appropriate match. [7] [8] A bi-factor model combines the one-factor and three-factor models. In this model, both the general factor (i.e. composite dark triad factor) and the three factors of the DTDD subscales (i.e. Machiavellianism, narcissism, and psychopathy) account for the shared variance of the items. [8]

Development

The DTDD was developed due to the absence of a single, concise test which measured the three dark triad traits simultaneously.Prior to the development of the DTDD, researchers were required to use different personality tests for each of the dark triad traits. [1] This made scoring difficult for researchers, as it required standardisation of scores of each test for comparison. Another issue with measuring all of dark triad traits by different tests was that it would involve too many items, making administration time-consuming and potentially fatiguing among test-takers, leading to less accurate responses. [1]

As such, Jonason and Webster sought to develop a short and easily administrable measure of the dark triad by adapting items from traditional, existing measures of each dark triad construct, namely the Mach IV for Machiavellianism, the Self-Report Psychopathy Scale-III (SRP-III) for psychopathy, and the Narcissistic Personality Inventory (NPI) for narcissism. The researchers first identified 22 candidate items, and conducted a principal component analysis to identify items that would be included in the DTDD. Four items that contributed to each of the dark triad trait the most were added in the DTDD. Since Jonason and Webster identified a “problem” item that was contributing to lower internal consistency reliability, it was rephrased in the final version of the DTDD. [1]

Effects of Sex and Age

Given that personality tends to be unstable until adulthood, researchers have been reluctant to conduct self-report personality measures on younger people. In line with this, most studies on the DTDD have been administering the questionnaire in university student or adult samples; however, a study has suggested that it is also applicable to use in high-school aged population as well. [9]

Consistent with studies investigating sex differences in scores of established measures of the dark triad traits, adult males tend to score higher on the DTDD than females, especially on the psychopathy subscale.Similar pattern of sex differences in the DTDD scores have been found among adolescents, however it is not as robust as the adult samples. Jones and Paulhus explain that this sex difference may emerge because males, more than females, tend to benefit more from using manipulative, exploitative strategies characteristic of the dark triad traits. Females may not benefit as much from engaging in these socially manipulative tactics as they tend to be more embedded in social structures. [1]

Adaptations

The DTDD has been translated and adapted for other cultures and languages, including French-Canadian, Japanese, Polish, Portuguese, Serbian, Spanish, Swedish, and Turkish versions. [10] [11] [12] [13] [14] [15] [16] [17]

The DTDD has been adapted for informants with the Dark Informant-rated Triad (DIRT) [18]

Alternatives to the DTDD

Other researchers saw the 12-item DTDD too brief in covering all relevant content involved in each of the dark triad traits. [19] As an alternative brief measure, Jones and Paulhus have developed the 27-item Short Dark Triad (SD3) in 2014, consisting of 9 items for each of Machiavellianism, psychopathy and narcissism subscale. [19] As opposed to the DTDD in which items were derived from existing dark triad measures, in the SD3, items were developed through considering theoretically relevant facets of the three traits. [19]

Criticisms of the DTDD

Comparison with the SD3

Researchers have questioned DTDD's validity, especially in comparison to the SD3. It has been found that the convergent validity of the SD3 is superior to the DTDD in relation to existing measures of dark triad subscales in multiple studies. [19] [20] Researchers report that the SD3 performs better than the DTDD in terms of incremental validity (i.e. the extent of a new instrument to predict additional information that was not previously predicted by other instruments). [20] Moreover, when content validity (i.e. whether a test captures the essential elements of a construct) of the two inventories was compared, the SD3 out-performed the DTDD. [19] [20] Researchers suggest that the DTDD's poorer performance on these validity outcomes may be due its sheer brevity and the large content overlap between the items, which grants the scale good internal consistency at the expense of sufficient coverage of theoretically significant content. [19] [20]

General critiques

The DTDD has also been criticised for its low discriminating power specifically for its narcissism subscale. [21] An item response theory analysis has revealed that the DTDD narcissism items were the easiest to respond to compared to DTDD items for Machiavellianism and psychopathy. [21] This implies that the DTDD narcissism subscale does not sufficiently discriminate between those with “normal” range of narcissism (which may result from having self confidence or high self-esteem) and those with “abnormal” levels of the trait. [21]

Other researchers have criticised about the sparse coverage of important psychopathy facets in the DTDD psychopathy subscale. [5] Specifically, the DTDD does not account for disinhibition (i.e. impulsivity), which may explain why it has weaker correlations with relevant Big Five personality traits such as Agreeableness and Conscientiousness compared to established measures of psychopathy. [5] They recommend that the DTDD should be used as an adjunct measure of psychopathy. [5]

The DTDD's psychopathy and Machiavellianism subscales have been questioned whether they are adequately distinct from each other, given that they are conceptualised similarly in the questionnaire. [22] A study demonstrated that the demarcation between the two subscales are blurred, as the DTDD Machiavellianism shows stronger correlation with a traditional measure of psychopathy rather than of Machiavellianism. [22] This study concludes that at least among university student aged men, the DTDD is better understood as a measure of two factors; narcissism and “Machiavellianism-psychopathy”, where Machiavellianism is conceptualised as the subclinical form of psychopathy. [22]

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References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Jonason, Peter K.; Webster, Gregory D. (2010). "The dirty dozen: A concise measure of the dark triad". Psychological Assessment. 22 (2): 420–432. doi:10.1037/a0019265. ISSN   1939-134X. PMID   20528068.
  2. ↑ Webster, Gregory D.; Jonason, Peter K. (2013). "Putting the "IRT" in "Dirty": Item response theory analyses of the Dark Triad Dirty Dozen—An efficient measure of narcissism, psychopathy, and Machiavellianism". Personality and Individual Differences. 54 (2): 302–306. doi:10.1016/j.paid.2012.08.027. ISSN   0191-8869.
  3. 1 2 Jonason, Peter K.; McCain, Jessica (2012). "Using the HEXACO model to test the validity of the Dirty Dozen measure of the Dark Triad". Personality and Individual Differences. 53 (7): 935–938. doi:10.1016/j.paid.2012.07.010. ISSN   0191-8869.
  4. ↑ Lee, Kibeom; Ashton, Michael C.; Wiltshire, Jocelyn; Bourdage, Joshua S.; Visser, Beth A.; Gallucci, Alissa (2013). "Sex, Power, and Money: Prediction from the Dark Triad and Honesty–Humility". European Journal of Personality. 27 (2): 169–184. doi:10.1002/per.1860. ISSN   1099-0984. S2CID   146205562.
  5. 1 2 3 4 5 Miller, Joshua D.; Few, Lauren R.; Seibert, L. Alana; Watts, Ashley; Zeichner, Amos; Lynam, Donald R. (2012). "An examination of the Dirty Dozen measure of psychopathy: A cautionary tale about the costs of brief measures". Psychological Assessment. 24 (4): 1048–1053. doi:10.1037/a0028583. ISSN   1939-134X. PMID   22612650.
  6. ↑ Paulhus, Delroy L; Williams, Kevin M (2002). "The Dark Triad of personality: Narcissism, Machiavellianism, and psychopathy". Journal of Research in Personality. 36 (6): 556–563. doi:10.1016/s0092-6566(02)00505-6. ISSN   0092-6566. S2CID   6535576.
  7. ↑ Jonason, Peter K. University of Western Sydney Kaufman, Scott B. Webster, Gregory D. Geher, Glenn (2013). What lies beneath the Dark Triad Dirty Dozen : varied relations with the Big Five. U.S.A., Individual Differences Research Group. OCLC   859108874.{{cite book}}: CS1 maint: multiple names: authors list (link)
  8. 1 2 Jonason, Peter K.; Luévano, Victor X. (2013). "Walking the thin line between efficiency and accuracy: Validity and structural properties of the Dirty Dozen". Personality and Individual Differences. 55 (1): 76–81. doi:10.1016/j.paid.2013.02.010. ISSN   0191-8869.
  9. ↑ Klimstra, Theo A.; Sijtsema, Jelle J.; Henrichs, Jens; Cima, Maaike (2014). "The Dark Triad of personality in adolescence: Psychometric properties of a concise measure and associations with adolescent adjustment from a multi-informant perspective". Journal of Research in Personality. 53: 84–92. doi:10.1016/j.jrp.2014.09.001. hdl: 2066/133749 . ISSN   0092-6566.
  10. ↑ Savard, Claudia; Simard, Caroline; Jonason, Peter K. (2017). "Dark Triad Dirty Dozen--French-Canadian Version". doi:10.1037/t65261-000.{{cite journal}}: Cite journal requires |journal= (help)
  11. ↑ Shimotsukasa, T.; Oshio, A. (2016). "Development and validation of the Japanese version of the Short Dark Triad (SD3-J): Comparing with the Japanese version of the Dark Triad Dirty Dozen". Personality and Individual Differences. 101: 514. doi:10.1016/j.paid.2016.05.295. ISSN   0191-8869.
  12. ↑ Czarna, A.Z.; Jonason, P.K. (2014). "Parszywa Dwunastka: Developing a Polish version of the Dark Triad Dirty Dozen". Personality and Individual Differences. 60: S62. doi:10.1016/j.paid.2013.07.270. ISSN   0191-8869.
  13. ↑ Macedo, A.; Araújo, A.I.; Cabaços, C.; Brito, M.J.; Mendonça, L.; Pereira, A.T. (2017). "Personality dark triad: Portuguese validation of the dirty dozen". European Psychiatry. 41: S711. doi:10.1016/j.eurpsy.2017.01.1268. ISSN   0924-9338. S2CID   148777708.
  14. ↑ Dinić, Bojana M.; Petrović, Boban; Jonason, Peter K. (2018). "Serbian adaptations of the Dark Triad Dirty Dozen (DTDD) and Short Dark Triad (SD3)". Personality and Individual Differences. 134: 321–328. doi:10.1016/j.paid.2018.06.018. ISSN   0191-8869. S2CID   53488227.
  15. ↑ Pineda, David; Sandín, Bonifacio; Muris, Peter (2018-06-08). "Psychometrics properties of the Spanish version of two Dark Triad scales: The Dirty Dozen and the Short Dark Triad". Current Psychology. 39 (5): 1873–1881. doi:10.1007/s12144-018-9888-5. ISSN   1046-1310. S2CID   149989382.
  16. ↑ Garcia, Danilo; MacDonald, Shane; Rapp-Ricciardi, Max (2017-05-22). "Factor analysis of the Swedish version of the Dark Triad Dirty Dozen". PsyCh Journal. 6 (2): 166–167. doi:10.1002/pchj.168. ISSN   2046-0252. PMID   28544739.
  17. ↑ Özsoy, Emrah; Rauthmann, John F.; Jonason, Peter K.; Ardıç, Kadir (2017). "Reliability and validity of the Turkish versions of Dark Triad Dirty Dozen (DTDD-T), Short Dark Triad (SD3-T), and Single Item Narcissism Scale (SINS-T)". Personality and Individual Differences. 117: 11–14. doi:10.1016/j.paid.2017.05.019. ISSN   0191-8869.
  18. ↑ Walker, S. A., MacCann, C., & Jonason, P. K. (2023). The Dark Informant-Rated Triad (DIRT): A concise informant-rated measure of the Dark Triad. European Journal of Psychological Assessment. Advance online publication. https://doi.org/10.1027/1015-5759/a000796
  19. 1 2 3 4 5 6 Jones, Daniel N.; Paulhus, Delroy L. (2013-12-09). "Introducing the Short Dark Triad (SD3)". Assessment. 21 (1): 28–41. doi:10.1177/1073191113514105. ISSN   1073-1911. PMID   24322012. S2CID   17524487.
  20. 1 2 3 4 Maples, Jessica L.; Lamkin, Joanna; Miller, Joshua D. (2014). "A test of two brief measures of the dark triad: The dirty dozen and short dark triad". Psychological Assessment. 26 (1): 326–331. doi:10.1037/a0035084. ISSN   1939-134X. PMID   24274044.
  21. 1 2 3 "Peer Review #1 of "The (mis)measurement of the Dark Triad Dirty Dozen: exploitation at the core of the scale (v0.1)"". 2016-03-01. doi: 10.7287/peerj.1748v0.1/reviews/1 .{{cite journal}}: Cite journal requires |journal= (help)
  22. 1 2 3 Carter, Gregory Louis; Campbell, Anne C.; Muncer, Steven; Carter, Katherine A. (2015). "A Mokken analysis of the Dark Triad 'Dirty Dozen': Sex and age differences in scale structures, and issues with individual items". Personality and Individual Differences. 83: 185–191. doi:10.1016/j.paid.2015.04.012. ISSN   0191-8869.
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