75) implied by this principle to operate with the dark triad combination, just as it has for other personality traits with less ominous connotations. study, 100 young adult couples, all in heterosexual relationships, were recruited from the same Croatian town.They had been together from 6 months to 11 years, averaging 3.5 years, and ranged from 18 to 31 in age.Perhaps you know two people who both seem to be highly narcissistic, in your opinion.They each clamor for attention, not only from each other, but from the world at large.The convergence hypothesis was tested by controlling length of relationship.Other controls were added, including similarities in age and education, and these, too, didn’t alter the basic like-attracts-like hypothesis.
Dark triad traits were measured with standard assessment instruments, which were then standardized and summed to provide one overall measure, although analyses were conducted for the individual scales as well.
These three qualities would all seem to be anathema to any kind of close relationship, much less mutual attraction between people having similarly dark personalities.
However, the Croatian psychologist and his colleagues believed it possible for the “nonrandom coupling” (p.
These findings led the authors to conclude that "in mate selection, similarity in personality is clearly more important than complementarity, even when undesirable traits are concerned” (p. Expanding beyond narcissism to these two other related, but independent traits that form the dark triad, this similarity effect becomes particularly impressive.
This “Bonnie and Clyde” effect suggests that people who tend to be exploitative, antisocial, and impulsive seem to seek out and then cling to their soulmates, even if they most likely don’t find those soulmates all that trustworthy.
It was interesting, further, that the more exploitative of the women (those high in Machiavellianism) were partnered with the more antisocial of the men.