Ramblings of an old Doc

 

To tell the truth, I shuddered when I read this article. Why? Because correlation doesn’t determine dependency nor causality. Correlation can  suggest a possible causal relationship, but great care must be exercised in the sampling, and in clear definitions.

For some reason, ACT became synonymous with intelligence to the people who published these findings. ACT scores indicate memory, and the ability to take tests…but not  purely intelligence. While it’s true that intelligent people tend to score better on tests, good test scores don’t mean the tested person is more intelligent than one who didn’t score as well. Tests can be biased, smart people might not know how to take the test, might be ill or fatigued on the day of the test, etc. Also, the most critical factor wasn’t looked at: The availability of high speed internet vs. the need/ability to buy those speeds, and test scores. THAT might have been more revealing.

Anyway, the article is here: http://highspeedinternet.com/blog/technology/states-with-faster-internet-access-have-smarter-people

Even they admit that:

“A few states stray from the trend by being among the 10 fastest states, but in the bottom 20 in ACT scores.

  • Michigan
  • North Dakota
  • Utah”

And:

“On the other end of the spectrum, some states are in the bottom 15 for Internet speeds, but still manage top-half ACT scores.

  • Maine
  • Idaho
  • Missouri”

Maine is the biggest oddity here—ranking 37th for Internet speed, but fourth for average ACT score…Even with these select exceptions, the correlation is quite strong (0.57) and it’s even stronger – 0.61 – when you look at the ACT math section individually.

They then went on to check correlations between “the average ACT score for each state and two measures of a state’s wealth, median household income (HHI)* and gross domestic product per capita (GDP). We pulled this data set from the U.S. Department of Commerce Bureau of Economic Analysis (2012).”

This, despite the ACT scores being from 2014.

“We found the correlation between a state’s GDP and its average ACT score is .41 and the correlation for HHI and average ACT score is .54. Remember the Internet speed correlation is .57. What does this mean?

A state’s average Internet speed is a better indicator of its average ACT score than its mean household income or its GDP.

The fact that the economic correlations are weaker than the Internet speed correlation shows that, although a state’s wealth may have some influence on both its Internet speed and its ACT scores, it is not the overriding factor causing the speed/ACT score relationship. Determining what the overriding factor actually is will require more research.”

From all this…what? That the Internet doesn’t dumb one down? That technology isn’t pernicious to human intelligence? To ACT sores?

What on earth are you talking about?!

I see some correlation of average Internet speeds and ACT scores…so what? Maybe if more specific work with locations and speeds had been done…maybe.


Comments
on Aug 23, 2014

Who's 'We'? And who paid for the 'study'?

Not asking you, Doc, just rhetorical questions.

on Aug 23, 2014

Internet usage != internet speed? Surely?

on Aug 23, 2014

Daiwa

Who's 'We'? And who paid for the 'study'?

Not asking you, Doc, just rhetorical questions.

I know, Daiwa

The speed data was obtained from here: http://www.broadviewnet.com/blog/2014/08/internet-speeds-by-state-map/

The scores, from here: http://www.act.org/newsroom/data/

The "we" (as best as I can get from the article): John Dilley and hispeedinternet.com and its blog. 

They're obviously interested in showing that the internet doesn't turn folks into brussel sprouts, and the faster the connection, the higher the ACT scores...(guilting one into "doing one's best for one's kids"). 

Apart from that little hiccup...my philosophical differences with them and the fact that they didn't have any sort of proper controls for this 'study'.

 

Just my private rant.

on Aug 24, 2014

Clearly, watching more cat videos makes one more intelligent. Or maybe more intelligent people watch more cat videos? It's like the chicken and the egg.

on Aug 24, 2014

Rather, the discerning man demands his cat videos in HD.

on Aug 24, 2014


It's like the chicken and the egg.

Not as simple as that, 'twould appear...

on Aug 24, 2014

Stay hungry, my friends ...

on Aug 24, 2014


Clearly, watching more cat videos makes one more intelligent. Or maybe more intelligent people watch more cat videos? It's like the chicken and the egg.

Everyone knows cat owners are more intelligent....

on Aug 24, 2014

This entire article is 100% BS as you cannot use average ACT score for anything due to the HUGE selection bias present...

In most states, students either generally take the ACT or generally take the SAT -- it is rare that most students will take both...as such, "SAT states" will have a lower percentage of students taking the ACT, and the students who do take the ACT are invariably the smarter, better, more ambitious students (hence why they bother taking both)...it is the exact opposite in "ACT states", which will generally have a higher average SAT score...

If you don't believe me, look at the numbers yourself:

http://www.act.org/newsroom/data/2013/states.html

Here are the states listed in order of highest ACT...next to that is the percentage that actually took the next:

1) Massachusetts (24.1 -- 22%)
2) Connecticut (24.0 -- 27%)
3) New Hampshire (23.8 -- 19%)
4) Maine (23.5 -- 8%)
....
47) Louisiana (19.5 -- 100%)
48) Tennessee (19.5 -- 100%)
49) Mississippi (18.9 -- 95%)
50) North Carolina (18.7 -- 100%)

The link will take you to all 50 states (and maybe DC?), and you can clearly see the trend that states with lower percentages of test takers tend to have higher average scores.

A similar phenomenon exists with the SAT, which is why ANY correlations with these test scores are complete BS and totally meaningless...

 

on Sep 02, 2014

 

 

 

 

on Sep 03, 2014



Quoting kryo,

Clearly, watching more cat videos makes one more intelligent. Or maybe more intelligent people watch more cat videos? It's like the chicken and the egg.



Everyone knows cat owners are more intelligent....

No, twat owners are more intelligent.  A twat being a cross between Tibetan Weazel and a cat.

on Sep 08, 2014

Tests have many bias type 'features' that distort the results.  For example, the use of the word "shrub" instead of "bush" disadvantages test takers who grew up in the USA and are of African American heritage.  It that community, 'bush' is used, and shrub is not.  Using shrub instead of bush distorts the test results.  How many other 'features' are embedded in these exams?  Who wins and who losses as a result of all these 'features?'

on Sep 08, 2014

Everyone who takes it?

on Sep 09, 2014

V00DOO

Everyone who takes it?

Don't know - I flunked.  (Just kidding!)