Poorly. The paper in question does not even purport to support this conclusion, when stated in such matter-of-fact terms. It's a very interesting study, with

Poorly. The paper in question does not even purport to support this conclusion, when stated in such matter-of-fact terms. It's a very interesting study, with laudable measures taken to overcome confounding factors. But I imagine the authors cringe when someone flogs it around as "COVID-19 reduces your IQ by 7!!!!!"