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Parasites may explain regional differences in intelligence

economist.com

11–20 of 35 posts

Re: Parasites may explain regional differences in intelligence

#11
Another HN participant told me about a reply to this latest paper by these authors.

http://blogs.discovermagazine.com/notrocketscience/2010/06/2...

When I see gee-whiz news reports about science, even in very reputable publications like The Economist, I think to turn to Peter Norvig's article "Warning Signs in Experimental Design and Interpretation"

http://norvig.com/experiment-design.html

to evaluate the research.

Re: Parasites may explain regional differences in intelligence

#14

Another HN participant told me about a reply to this latest paper by these authors. http://blogs.discovermagazine.com/notrocketscience/2010/06/2... When I see gee-whiz news reports about science, even in very reputable publications like The Economist, I think to turn to Peter Norvig's article "Warning Signs in Experimental Design and Interpretation" http://norvig.com/experiment-design.html to evaluate the research.

There is an interesting comment in the Discover post, where Carl Zimmer (author of popular science book on parasites) points out several studies from all around the world (Jamaica, China, Indonesia, Philippines) where they found children got smarter after de-worming:

http://blogs.discovermagazine.com/notrocketscience/2010/06/2...

Re: Parasites may explain regional differences in intelligence

#15
post #7
post #2

I'm really curious as to how exactly they accounted for other factors. They say they compared findings to other studies that looked at other possible explanations, but quite many of them are certainly correlated if not caused by one another.

one can deduce how two kinds of organisms have influenced each other by studying how their respective gene pools (have) co-evolve(d)

Statically the problem that he posed is still there, what are the variables they ignored when calculating the statistical significance of their hypothesis? I actually read the paper, and well, it was one of the worst that I have read in my entire life. In the end of the paper they wrote: "We are not arguing that global variation in intelligence is only caused by parasite stress."

So why is the point of having a research about causation when various independent causes can exist and do not test how much the hypothetical cause affects the causation relationship in general? Should I publish a paper on intelligence and ice cream consumption by population in the last 50 years to show how ridiculous the entire situation is?

Sounds like that sort of paper that someone publishes only so that his name get cited more times.

Re: Parasites may explain regional differences in intelligence

#17
post #16
post #12

another reason to support universal health care: a smarter public

You presume that universal health care will lead to a healthier public

It's been successful in every country that has tried it. Granted, the US has a bad habit of poorly implemented government programs so who knows, we may be the first exception.

PS: Medical outcomes are far more dependent on the average level of care than the peek level of care. EX: There is a lot of evidence that the average doctor is significantly more effective than a "high preforming" doctor that is sleep deprived.

Re: Parasites may explain regional differences in intelligence

#18
post #17
post #16

Earlier quoted context omitted.

You presume that universal health care will lead to a healthier public

It's been successful in every country that has tried it. Granted, the US has a bad habit of poorly implemented government programs so who knows, we may be the first exception. PS: Medical outcomes are far more dependent on the average level of care than the peek level of care. EX: There is a lot of evidence that the average doctor is significantly more effective than a "high preforming" doctor that is sleep deprived.

> It's been successful in every country that has tried it.

Doesn't that depend on the starting point? For example, NHS started during the post WWII depression in the UK. The US isn't starting from there.

I'm trying to track down the stats, but I've heard that the US lifespan is world-longest if you adjust for accidents and homicide, two things that aren't affected by healthcare.

> Granted, the US has a bad habit of poorly implemented government programs so who knows, we may be the first exception.

The US govt gets the same amount of tax revenue per person as the "rich" EU countries. If the benefits are less ....

Re: Parasites may explain regional differences in intelligence

#19
post #16
post #12

another reason to support universal health care: a smarter public

You presume that universal health care will lead to a healthier public

This article seems to be leading to the conclusion that basic healthcare helps eliminate the sort of diseases that contribute to a lower IQ population. These are probably people who lack very basic healthcare and sanitation... I think that it's hard to argue that the basic health needs of the population wouldn't be better served if it was health care was free (such as dealing with treatable communicable disease). I think you might run into problems if you're talking about specialist care, but otherwise.....

Re: Parasites may explain regional differences in intelligence

#20
post #18
post #17

Earlier quoted context omitted.

It's been successful in every country that has tried it. Granted, the US has a bad habit of poorly implemented government programs so who knows, we may be the first exception. PS: Medical outcomes are far more dependent on the average level of care than the peek level of care. EX: There is a lot of evidence that the average doctor is significantly more effective than a "high preforming" doctor that is sleep deprived.

> It's been successful in every country that has tried it. Doesn't that depend on the starting point? For example, NHS started during the post WWII depression in the UK. The US isn't starting from there. I'm trying to track down the stats, but I've heard that the US lifespan is world-longest if you adjust for accidents and homicide, two things that aren't affected by healthcare. > Granted, the US has a bad habit of p…

> I've heard that the US lifespan is world-longest if you adjust for accidents and homicide, two things that aren't affected by healthcare.

Other measures of health care quality, such as infant mortality, are worse in the US than in many other countries. So I doubt it.

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