Fact-check: “Left handed people are smarter than right handed people”
Verdict: False (82% confidence)
The bulk of peer-reviewed research finds no meaningful intelligence difference between left- and right-handers — a 2018 systematic review in PubMed found differences are 'negligible' across studies, and a separate 2018 study found no cognitive ability differences when handedness is measured as hand preference. Two older studies did find left-handers slightly overrepresented at the high end of verbal reasoning, or gifted populations slightly less right-handed, but those are narrow findings in sp…
This fact-check was conducted by SpinkillerAI, a non-partisan AI-powered accountability platform.
Related fact-checks
- Donald Trump Jr accepted a gift from a Russian oligearch — True
- European Union plans 200 million Euro investment in Greenland as a response to Trump's posturing — Mostly True
- Approximately 45% of the current Canadian population is made up of immigrants and the children of immigrants — Mostly True
- Recent job numbers increased faster than had been expected and are ahead of most analysts expectations — Partly True
- Medicare for all would cost trillions a year that Americans would pay through higher income taxes — Partly True