An analysis of hand use by character role (protagonist princesses versus antagonist villains) from all 13 Disney "Princess" movies was conducted. Over time, protagonists became less right-handed than antagonists, with this relationship primarily occurring after 1992. Overall, protagonists became less right-handed over the past ∼80 years, while antagonists' handedness remained stable. Hand use in characters was much less right-handed than in the human population and, contrary to the cultural and historical association between left-handedness and evil, antagonists now tend to be more strongly right-handed than protagonists.
Propper et al. (Wed,) studied this question.