Goodman says some backlash on social media has put him on the defense. “I’ve already gotten a lot of emails from lefties who are correctly indignant and say ‘but wait a minute, I am very smart’. So I want to be very clear my study does not say all lefties are disadvantaged.”
Which hand you write with isn’t just about preference. Goodman says it reveals something more. “Handedness is interesting because it actually indicates that two people might have brains that are wired a bit differently,” he explained.