Description

The “Dirty Dozen” scale (DD) is a psychometric tool designed to quickly and effectively measure the three dark dimensions of personality, known as the “Dark Triad.” These dimensions are Narcissism, Machiavellianism, and Psychopathy. The scale consists of 12 statements, four for each of the three dimensions.

Objective

The primary aim of the Dirty Dozen scale is to assess the dark aspects of personality in a brief and user-friendly way. This tool is widely used in psychological research to better understand the influence of these traits on human behavior and interpersonal relationships.

Analysis

The Dirty Dozen scale includes the following dimensions and statements:
Narcissism:
“I tend to want others to admire me.”
“I believe I am superior to most people.”
“I feel that others should respect me more.”
“I exploit others to achieve my goals.”
Machiavellianism:
“I tend to manipulate others to get what I want.”
“I believe that lying and deception are sometimes necessary.”
“I am unconcerned with morality when trying to achieve my goals.”
“I take advantage of opportunities that arise, even if it means exploiting others.”
Psychopathy:
“I lack remorse or guilt for actions that may hurt others.”
“I am impulsive and do not think about the consequences of my actions.”
“I enjoy the feeling of risk and adrenaline.”
“I tend to be callous and ruthless in interpersonal relationships.”
Participants are asked to respond to each statement using a Likert scale ranging from 1 (strongly disagree) to 7 (strongly agree).

Scoring

The total score for each dimension is calculated by summing the scores of the related statements. Higher scores indicate a stronger presence of the specific personality trait.

References

Jonason, P. K., & Webster, G. D. (2010). The Dirty Dozen: A concise measure of the Dark Triad. Psychological Assessment, 22(2), 420–432.
Paulhus, D. L., & Williams, K. M. (2002). The Dark Triad of personality: Narcissism, Machiavellianism, and psychopathy. Journal of Research in Personality, 36(6), 556–563.
Furnham, A., Richards, S. C., & Paulhus, D. L. (2013). The Dark Triad of personality: A 10-year review. Social and Personality Psychology Compass, 7(3), 199–216.
Miller, J. D., & Campbell, W. K. (2008). Comparing clinical and social-personality conceptualizations of narcissism. Journal of Personality, 76(3), 449–476.
Jones, D. N., & Paulhus, D. L. (2014). Introducing the Short Dark Triad (SD3): A brief measure of dark personality traits. Assessment, 21(1), 28–41.