In 1998, John McHoskey, William Worzel, and Christopher Szyarto proposed that narcissism, Machiavellianism, and psychopathy are more or less interchangeable in normal samples.
Delroy L. Paulhus and McHoskey debated these perspectives at an
American Psychological Association conference, inspiring a body of research that continues to grow in the published literature. Delroy Paulhus and Kevin Williams found enough differences between the traits to suggest that they were distinct despite their similarities, thus the concept of a "triad" of offensive personality traits was conceptualized. There has been research on Machiavellianism using various dark triad measures, including the
Short Dark Triad (SD3), and the
Dark Triad Dirty Dozen test. Miller, Lynam, and Sharpe (2022) state that the reason why the multidimensional nature of Machiavellianism has "received less attention" is because there is "little research on Machiavellianism outside the context of the D3".
Psychopathy Many psychologists consider Machiavellianism to be essentially indistinguishable from psychopathy, as they both share manipulative tendencies, disregard for morality, and cold callousness as their primary attributes. There is an immense and ongoing debate amongst researchers as to whether or not Machiavellianism and psychopathy should be treated as the same construct, or at least treat Machiavellianism as a subset of psychopathy. When tested, High Machs scored consistently high on measures of psychopathy, more than Low Machs. Primary psychopaths also scored higher on the Machiavellianism scale than secondary psychopaths. According to John McHoskey, the MACH-IV test is merely "a global measure of psychopathy in noninstitutionalized populations", and that this is a result of the disconnect between clinical and personality psychology. Many have stated that the Machiavellianism scale measures nothing more than "successful" psychopathy, or psychopathy without the extreme clinical characteristics. Even compared to other "dark" traits, research has shown that Psychopathy correlates with Machiavellianism far more than it correlates with narcissism. A 2022 paper stated that Machiavellianism "is theoretically distinct from psychopathy, but empirically they are nearly indistinguishable". Beverly Fehr even suggested that psychopaths may be simply "High Machs who have had run up against the law". Researchers note that Machiavellianism is well represented in every measure of psychopathy, such as the Factor 1 characteristics on the
Psychopathy Checklist, more specifically traits such as "conning/manipulative", "pathological lying," "callous/lack of empathy", and "glibness/superficial charm". Machiavellianism has a strong relationship with both primary and secondary psychopathy on Levenson's self report test. In experiments High Machs also scored highly on the Psychopathic Deviate subscale on the
MMPI. On the
Psychopathic Personality Inventory, created by
Scott Lilienfeld and Brian Andrews, there is even a subscale similarly named
"Machiavellian Egocentricity". The subscale is said to assess a "ruthless and self centered willingness to exploit others". Machiavellianism and psychopathy have both been negatively correlated with the recognition of facial emotions, with one study stating that "if the ability to recognise facial expressions is exclusively an affective empathy task, it indeed accounts for the facial recognition deficits found in primary psychopathy and Machiavellianism." High scores on the
Triarchic Psychopathy Measure questionnaire (especially the "Meanness" subscale) strongly correlated with Machiavellianism. One group of researchers noted that by definition, "the interpersonal features of psychopathy involve a calculating, cunning, and manipulative style" thus a highly psychopathic person is
ipso facto also a person high on Machiavellianism. Machiavellianism and psychopathy overlap so heavily that researchers have proposed merging the two traits into each other, preferably incorporating Machiavellianism into psychopathy. There have been attempts to combine Machiavellianism and psychopathy into one construct, such as the creation of a "Dark Dyad" as opposed to a "Dark Triad", with the exclusion of narcissism. A 2019 study done on criminal psychopaths noted that Machiavellianism showed the strongest association with the affective aspect of psychopathy.
Difference between constructs:Impulse control Many other psychologists state that while Machiavellianism and psychopathy overlap heavily, there is much evidence to suggest that they are distinct personality constructs. Psychologists who stress the differences between Machiavellianism and psychopathy state that, in total contrast to high Machs, psychopaths are impulsive, tend to be reckless, and lack long term planning skills.
Delroy Paulhus and others have stated that this difference between the two traits is often underappreciated. Daniel Jones notes that even though both psychopaths and High Machs share a manipulative and callous nature, the difference between Machiavellianism and psychopathy lies in the type of manipulation employed by the two constructs. Machiavellianism is marked by cautious planning, and manipulating only when something is to be gained, while psychopathy is marked by rashness, and manipulating regardless of situation. O'Boyle and others found however that the notion that Machiavellianism is marked by cautiousness does not match empirical research which shows that it can be correlated with reckless behavior in certain situations. In response to this interpretation, Miller et al (2017) responded by saying that empirical research casts "substantial doubt" on the notion of Machiavellianism being distinguishable from psychopathy, and that ultimately literature on Machiavellianism should be framed as an alternative literature on psychopathy, as they view that Machiavellianism literature is far more helpful in understanding psychopathy. Individuals high in the two traits do this as a form of self aggrandizement to help their chances of success in a given situation. Machiavellianism scores were positively associated with aspects of narcissism such as entitlement and exploitativeness, and inversely associated with adaptive narcissistic tendencies, like self-sufficiency. Compared to High Machs, narcissists are less malevolent and show a more socially positive personality. They also have higher levels of self-rated happiness. Machiavellianism and narcissism both share a lack of empathy and a focus on self-interest, though the two traits differ in how they manifest in people, and what their motivations are. High Machs have tendencies to be driven by personal gain, whereas narcissists are driven by a need for validation and admiration. Opposed to those high on narcissism, High Machs tend to have better self control, are less impulsive and are more self-serving their interpersonal interactions, while narcissists may be more impulsive and attention-seeking. In terms of social relationships, High Machs are more likely to be more exploitative towards others, while narcissists may be more likely to seek out relationships that serve to bolster their
self-esteem and provide them with the admiration they desire. Compared to subclinical narcissists, High Machs exhibit a greater lack of empathy, because of the emotional deficiencies inherent within Machiavellianism. Psychologist Daniel Jones has stated that "individuals higher on Machiavellianism are well suited for crimes in the financial world, especially crimes that skirt the legal system". Delroy Paulhus has stated that Machiavellianism is the main trait for white collar criminals and con artists, and not psychopathy, stating that: Although direct research on this topic is difficult, it seems clear that malevolent stockbrokers such as Bernie Madoff do not qualify as psychopaths: They are corporate Machiavellians who use deliberate, strategic procedures for exploiting others. A genuine psychopath, even at the subclinical level, lacks the self-control to orchestrate the schemes of a shrewd stockbroker. In a research paper, Daniel Jones and others stated that a person high on Machiavellianism would also be possibly drawn to cybercrime, noting that "although we did not directly assess crimes, we did find patterns of system infiltration that were different among the three traits, with Machiavellianism being associated with the stealthiest approach among the three traits." They also stated that Machiavellianism would only be associated with crime if the "benefits outweighed the risks". They went on to clarify that this is opposed to individuals high in psychopathy, whom are prone to crime regardless of the situation.
Other "dark" groupings Machiavellianism has been featured in many other groupings of dark traits, such as the dark tetrad, which adds
sadism to the dark triad traits. The characteristics of Machiavellianism have also been viewed as potentially correlated with sadism. The paper titled "The Dark Core of Personality" introduced a theoretical framework to understand various "dark traits" in personality as manifestations of a single underlying factor called the
Dark Factor of Personality. This factor represents a general dispositional tendency where individuals prioritize their own utility (self-interest) at the expense of others, often justifying their actions through certain beliefs. The concept of D encapsulates all of the main "dark traits", with the addition of Spitefulness, Egoism,
Moral Disengagement, Entitlement, and Self-interest. The authors of the study argued that while Machiavellianism, along with other dark traits like Narcissism and Psychopathy, has its unique features, it also shares a common core with these traits, which is encapsulated in the D factor. This means that people who score high in Machiavellianism tend to exhibit behaviors that prioritize their own benefit over others' which correlate with characteristics that align with the D factor. It is said that manipulativeness and callousness is responsible for the covariances among the dark personalities in general. ==DSM: Trait, not disorder==