Confirmed: Pretty much everything is genetic

The study may explain why there are so many bad drivers out there — about 30 percent of Americans have the variant, the team at the University of California Irvine found.

“These people make more errors from the get-go, and they forget more of what they learned after time away,” Dr. Steven Cramer, who led the study published in the journal Cerebral Cortex, said in a statement.