This appears to show that the mean IQ of pandemic cohorts is down by nearly 20 points to around 80, compared to the pre-pandemic testing averaging IQ of 100. Th

This appears to show that the mean IQ of pandemic cohorts is down by nearly 20 points to around 80, compared to the pre-pandemic testing averaging IQ of 100. This is almost impossible to believe, unless perhaps "social distancing" is just extremely devastating to early childhood education--is there any other previous studies showing such a drastic impact on isolated children though?