Up equals good, happy, optimistic; down the opposite. Right is honest and trustworthy. Left, not so much. That’s what language and culture tell us. “We use mental metaphors to structure our thinking about abstract things,” says psychologist Daniel Casasanto, “One of those metaphors is space.”But we don’t all think right is right, Casasanto has found. Rather, “people associate goodness with the side they can act more fluently on.” Right-handed people prefer the product, job applicant, or extraterrestrial positioned to their right. Lefties march to a left-handed drummer. And those linguistic tropes? They probably “enshrine the preferences of the right-handed majority.”
Casasanto, of The New School for Social Research, and Evangelia G. Chrysikou, of the University of Pennsylvania, wanted to find the causes of these correlations. Does motor experience “give rise to these preferences, or are they hardwired in the brain?” If the former, “how flexible are these preferences?