Figure 2. Frequency distributions showing the bi-modality of the three Dirty Dozen Dark Triad traits.

N = 3,698. The numbers on the y-axis represent the proportion of replies for each Likert-category (1–7) on the x-axis. For instance, 47% of total replies on DD psychopathy items were placed on the lowest option (1) “strongly disagree,” which depicts the skewness in response pattern.