Confusing cause and effect

Post Hoc Ergo Propter Hoc

COVID is making Americans stupid:

Study shows worrying about virus leads to people making bad choices and performing poorly on simple cognitive tests

A new study has found that those who are worried about the COVID-19 pandemic are slower at processing information, worse at retaining information and more likely to overestimate negative odds than their less anxious counterparts.

The study, conducted by McGill University and the Montreal Neurological Institute-Hospital, surveyed 1,500 Americans online from April to June 2020. 

The authors concluded that people more worried about coronavirus and its effects performed worse at information processing tests and had a distorted view of risk levels.

That’s like saying liberalism makes one stupid, while the best scientific evidence science shows that it’s quite the other way around.