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)

- Psychometric properties of the DTDD-T, SD3-T and SINS-T are consistent with the original versions.
- Internal consistency, factor structures, and convergent and discriminant validity of the scales were satisfactory.
- The DTDD-T, SD3-T and SINS-T can be used in further research.

The Dark Triad Dirty Dozen (i.e., DTDD), Short Dark Triad (i.e., SD3), and the Single Item Narcissism Scale (i.e., SINS) were adapted into Turkish and validated (N = 368). We examined internal consistency, factor structures, and convergent and discriminant validity of the scales using the Mach-IV, LSRP, NPI-16, Rosenberg's self-esteem scale, and Big Five scales. The Turkish versions of the scales had good psychometric properties and can be used in further research.