During a math exam, I was told: "You are left-handed, you should become a mathematician."
I searched online and, sure enough, there are some web-sites claiming that left-handed people tend to be better at mathematics.
For example, Fact Retriever says:
Studies have suggested that left-handers are more talented in spatial awareness, math, and architecture. Right-handers tend to be more talented verbally.
They cite an entire book as the source.
Is it true?