Online IQ tests and normalization
37 more posts in this thread. [Missing image file: iq.gif]
The other night there was a thread on here about someone who thought he was doomed as an intellectual because his IQ is 107. I ended up taking the IQ test here
and was shocked when my result was 106. I then took the test at www.iqtest.com (and, yes, paid $10 for the results--a bruised ego can be a powerful motivator) and scored 147. Interestingly, I scored 152 (the ceiling?) on all but one of the subscores, except "computational speed", on which I scored 93 (!). I also paid $10 to take the test here
three times. My results were 135, 138, and 147. Then I went back to retake the test that I bombed, but with a few minutes left my fire alarm went off and I had to exit the test. I felt like I did much better the second time, probably because I was pretty tired when I took it the first time.
Some thoughts on the three tests:
The iqtest.com test is almost certainly only valid for English-speaking adults, and your level of education will affect your result. When I scored so much higher on this test than I did on the first one I took, my first thought was that it's just a vanity test. However, my report CLAIMED that I scored higher than 99.91% of test takers to get a score of 147. On the other hand, they say that the average score is 108. (Their explanation is essentially that retards can't into the internet.)
The other two tests are quite similar, though the questions near the end on the one that I bombed seem much harder than the ones near the end on the one that I did well on. Two of the three tests won't give you your score unless you pay them, which must have an effect on the average score. The most difficult of the three tests is completely free, so I imagine that some people take it over and over again to see how high they can score (or just for fun). I also believe that it should be possible to increase your score by quite a large amount on the Raven's-type tests through practice.
What does /sci/ think?
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I work as a Lifeguard for a private outdoor apartment building pool. I have access to various chemicals, including Muriatic Acid (31.45% HCl). I decided to have a little bit of fun with it.
I found a piece of metal on the ground at the pool (it's a dirty and slightly rusted medallion), and I placed it in a small plastic container in the filter room, and poured a bit of the acid on it. I also poured a little bit over a small patch of concrete floor next to it.
The patch started to bubble quite a bit, but it subsided after about a minute. The metal also started bubbling, albeit less, and it did not subside after a few minutes. I left both overnight. Before I left, I could smell some noxious fumes, which I assumed was the HCl vaporizing quickly because of the reaction.
What will I find in the morning? Will the fumes clear out by then? (I'm not sure if the room is ventilated or not) If not, then should I used a base such as soda ash or bicarbonate of soda to neutralize the acid? (I have some laying around I think)