It will be quite obvious that extremely cruel people who commit violence both privately and by official order—for example, while serving in the police or armed forces—are psychopathic individuals with problems in the inhibition of violence. While a large number of studies compare the distribution of psychopathic traits between private criminals and the general population, there is very little such data regarding war criminals. However, there is one study examining men who served in the police or armed forces in Chile under the regime of dictator Augusto Pinochet and committed crimes against humanity, such as mass arrests, torture, murder, and the “disappearances” of people unwelcome to the regime.
The average psychopathy level according to the PCL-R test (scale from 0 to 40) for a sample of Chilean men who were not criminals was 5.21. Chilean men who were criminals demonstrated an average psychopathy level 4 times higher—20.93. This result is consistent with other studies conducting similar comparisons between samples of violent criminals and the rest of the population in various countries.
But far more interesting results are shown by Chilean men who committed crimes against humanity. Their average psychopathy level was 21.06, almost the same as that of ordinary criminals. It would seem there is no difference between them. But let us move to the comparison of different components of psychopathy. For each of the 20 items of the PCL-R test, a person can receive 0, 1, or 2 points, depending on the absence, partial presence, or full presence of a certain psychopathic trait. These items are divided into 4 categories representing the assessment of manipulation in interpersonal relationships (tendency toward lying and deception), affective psychopathy (lack of empathy and guilt), an impulsive lifestyle, and antisocial behavior. In the first two categories, the average scores for these criminals were much higher (1.43 and 1.64) than the scores of ordinary criminals (0.91 and 1.19) and the rest of the population (0.31 and 0.37). Meanwhile, in the last two categories, their scores (1.00 and 0.51) were much higher than those of the rest of the population (0.24 and 0.16), but lower than those of ordinary criminals (1.28 and 0.99).
The commission of cruel and mass crimes against humanity is associated with extremely pronounced manipulativeness and deceitfulness, as well as insensitivity and ruthlessness, even when compared to the commission of ordinary private acts of violence. At the same time, the perpetrators of such crimes appear much more normal than ordinary criminals in their lifestyle; they are not as impulsive or antisocial.
It should be noted that the second category of PCL-R test items, responsible for affective psychopathy, can be most directly correlated with the mechanism of violence inhibition. A malfunction of this mechanism in a person primarily leads precisely to the absence of internal rejection and resistance to causing harm to others, whereas the other categories rather reflect traits that often accompany such ruthlessness. Based on this, it can be concluded that in those who commit crimes against humanity, the malfunction of the violence inhibitor is far more severe than in private violent criminals. At the same time, they are well able to restrain themselves in situations where it is rationally beneficial, for example, in everyday life. This may be linked to a sufficiently high level of intelligence in these individuals, which allowed them, among other things, to successfully enter police or military service and be honored with the dictator’s order to destroy people unwelcome to him.









