3 ms·Covid-19 causes ‘chronic’ cognitive deficits equivalent to brain aging 10 years7 points by k__ 6y agoazhenley 6y agoHow did they measure that Covid-19 causes a drop of 8.5 IQ points if their IQ wasn't measured before they got sick?brador 6y agoYou could use sub-population averages if your sample size is large enough.