Researchers led by Delroy Paulhus, PhD (developer of the Paulus Deception Scales) identified three trends in personality that predict student cheating:
College students who admitted to cheating in high school or turned in plagiarized papers ranked high on personality tests of the so-called Dark Triad: psychopathy, Machiavellianism (cynicism, amorality, manipulativeness), and narcissism (arrogance and self-centeredness, with a strong sense of entitlement). Of the three dark personality types, psychopathy was most strongly linked to cheating. These findings appear in the September Journal of Experimental Psychology: Applied.
Is this a bit like saying that cheaters cheat? Actually it does matter if we're interested in the respective roles of disposition and situational factors driving behavior. Situational factors may indeed increase or decrease motive to cheat, but these findings suggest that personality does matter as well.