51–60 of 300 posts
Earlier quoted context omitted.
Pardon my ignorance, but how is this IQ data obtained? It is reported by the government? Are IQ tests standardized?
It's official data released by Chinese. Which helps explain why Han Chinese are on top of the list.
Earlier quoted context omitted.
The South Coast (California) Air Quality Management District does some really thorough tests on the quality of the various low-cost sensors: https://www.aqmd.gov/aq-spec/evaluations/summary-pm
Anyone want to review this table and suggest a currently commercially available option in the $300 and lower price range? I may have time this afternoon but if anyone does go thorough it I'm interested to know.
After skimming the rest of the table, it looks like the PurpleAir II sensors might have some of the best field R^2 for PM 2.5 and PM 1.0
From the original source: > Stock market returns are lower on polluted days. I don't want to dismiss the entire article, but I think this points to possibility that there is some bad statistics going on here. I don't see how daily stock returns are proof of, or even related to, cognitive ability on a daily basis. This is exactly the type of finding you'd expect with p-hacking.
This is probably just a coincidence. Stock markets perform lower on Mondays: https://www.macroption.com/stock-market-performance-volatili... Traffic is probably generally higher on Mondays, though I have only anecdotal evidence.
From the original source: > Stock market returns are lower on polluted days. I don't want to dismiss the entire article, but I think this points to possibility that there is some bad statistics going on here. I don't see how daily stock returns are proof of, or even related to, cognitive ability on a daily basis. This is exactly the type of finding you'd expect with p-hacking.
So does this mean we can now expect populist politicians to crank up PM2.5 emitters at a massive scale prior to elections?
From the original source: > Stock market returns are lower on polluted days. I don't want to dismiss the entire article, but I think this points to possibility that there is some bad statistics going on here. I don't see how daily stock returns are proof of, or even related to, cognitive ability on a daily basis. This is exactly the type of finding you'd expect with p-hacking.
This is probably just a coincidence. Stock markets perform lower on Mondays: https://www.macroption.com/stock-market-performance-volatili... Traffic is probably generally higher on Mondays, though I have only anecdotal evidence.
Earlier quoted context omitted.
No that is not what it is claimed. Pollution reduces your IQ, not that it makes your IQ lower than someone else's. The people living in those cities form a so-called "self-selecting" sample. They are probably, on average better educated, and they recognize the value of education much better. They already would score higher than the others, that's why they moved to the city. It might just as well be that the same peop…
The original post doesn't mention IQ. IQ is a terrible metric for studying short-term cognitive effects.
Why wouldn't IQ tests be great for studying short term cognitive effects? I would trust their values for these type of studies the most: how does lack of sleep, being drunk, after exercise, etc affect your ability to solve abstract problems.
It has far fewer variables to account for than predicting someone's long term success.
Earlier quoted context omitted.
The South Coast (California) Air Quality Management District does some really thorough tests on the quality of the various low-cost sensors: https://www.aqmd.gov/aq-spec/evaluations/summary-pm
Anyone want to review this table and suggest a currently commercially available option in the $300 and lower price range? I may have time this afternoon but if anyone does go thorough it I'm interested to know.
Under the table is definition of R^2
>The coefficient of determination (R2) is a statistical parameter measuring the degree of relation between two variables. ....
The more - the better. Range [0; 1)
More device in your area === better quality of measurement
This really bothers me. I live in a VERY polluted place, and unfortunately moving away won't be an option for me for at least half a decade. What can I do to minimise the health effects of such an atmosphere? I'm planning on getting an indoor air filter for my home.
From the original source: > Stock market returns are lower on polluted days. I don't want to dismiss the entire article, but I think this points to possibility that there is some bad statistics going on here. I don't see how daily stock returns are proof of, or even related to, cognitive ability on a daily basis. This is exactly the type of finding you'd expect with p-hacking.