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IQ tests. How valid are they?

OinkBoink

Senior member
Some people say that IQ tests are culturally biased whereas certain other scientists I've seen say that tests like Raven's Progressive Matrices (which is a pattern recognition test) aren't culturally biased at all. RPM, for instance, does not require the use of language. Dunno, but I guess you can train yourself to become good at pattern recognition too.

Just a query: even if IQ tests are culturally biased, can't you make comparisons within individual cultures?

Some scientists say that IQ tests are fairly accurate and that people are just in denial about the facts as most people do not want to accept that they're less intelligent than others. Other scientists say that reducing intelligence to a number is a gross approximation. V.S. Ramachandran, for instance, says that our livers have about 30 functions whereas the brain has 100s and 1000s of functions and taking all of that and assigning a value to it is very reductionist. V.S. Ramachandran also talked about this simple study where people were asked if their IQ was above average or below average and 90% of people answered that their IQ was above average, which is a mathematical impossibility.

I've also wondered how mental state/health/illness affects IQ. Someone who's bipolar may score low when in depression but higher when in hypomania/mania. Someone with OCD may not score very well if his/her brain is filled with intrusive thoughts. Someone who's undergone emotional trauma may not score very well if his/her mental state isn't conducive for such cognitive based tasks. Performance anxiety is another thing that can play a role. Pretty much any mental state that reduces cognitive efficiency can lower your test scores.

Also, how do you account for the fact that sometimes you just get ideas and at other times ideas don't click that fast. Of course, someone who's intelligent may get ideas more often than not, but I guess this still happens with everyone.

How well can you separate "innate intelligence" from environmental factors?

James Watson, Richard Feynman, Bill Shockley, all of whom are/were Nobel laureates, scored between 120-130 on IQ tests. Above average, but not particularly high.

As an aside, native intelligence isn't something to be very proud of anyway. Nature rolls a dice and some people get the right genes. Big deal.

Personally, I'm not against or for any of these tests. I'm simply not knowledgeable enough to make any sort of an assessment. But I do accept the fact that there are people who are smart/smarter than me and people who aren't that smart. So, what do you guys think?
 
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I do well on standardized tests, but I recognize that they are measuring specific aspects of intelligence such as pattern recognition and symbol processing. They don't measure "people skills," or "common sense," or creativity, or ambition.

I'm smarter (in the IQ test sense) than the CEO of my company, but he's the one that was able to build the company up from nothing. I doubt I'd have been able to do that even if I'd wanted to.
 
Some scientists say that IQ tests are fairly accurate and that people are just in denial about the facts as most people do not want to accept that they're less intelligent than others. Other scientists say that reducing intelligence to a number is a gross approximation.

These aren't really as mutually exclusive ideas as they sound.
 
Ramachandran also talked about this simple study where people were asked if their IQ was above average or below average and 90% of people answered that their IQ was above average, which is a mathematical impossibility
I wouldn't say it is impossible. Ask the right room full of people and you could very well get 90% of them actually testing above average on an IQ test.

Totally depends on the sampling methods.
 
I wouldn't say it is impossible. Ask the right room full of people and you could very well get 90% of them actually testing above average on an IQ test.

Totally depends on the sampling methods.

Of course, I'm presuming they kept that in mind. I mean, in a room full of physicists, most probably everyone would have an above average IQ. They must have thought of that. They probably did a large scale study asking random people. Though, I haven't read up on the study myself.
 
Everyone(well, most people) have their own unique kind of stupid and smart. A test may or may not pick up on that. I don't really believe in them.
 
People who score poorly are always screaming there is some sort of bias. Intelligence doesn't measure success. It doesn't measure coordination. It doesn't measure drive. Our 'every child is a snowflake, nobody is a loser' culture struggles with the fact that not everyone is intelligent. Half of people have to be below average. They make up shit like 'kinesthetic intelligence' to be able to tell dumb as a stump, yet able to throw a football Johnny that he isn't dumb. He's kinesthetically intelligent. PC BS.

So yes, there is intelligence. Yes test can measure it. However its not the end all of everything in the world.
 
I had one done as a kid (no, not some online test) and I'm trying to remember what exactly was on it. I know there was math/logic/reasoning, reading comprehension, etc....

IQ tests are purely academic, and don't measure things like "street smarts" as far as I'm aware.
 
I took one online, and was going to take another to verify it, but I hate taking pointless tests, so I never did. I have no idea what I got, but remember being satisfied with the result, whatever it was.
 
Testing Your "Motion Quotient"

Researchers at the University of Rochester have found that a simple visual task can predict IQ.

The study found that people with higher IQs were actually the worst at seeing movement in the large images, or, in other words, the best at filtering out distracting sensory signals. How people performed on this simple task turns out to be a very good predictor of their performance on a standardized intelligence test.

http://www.youtube.com/watch?v=qxt2Uo_GuXI
 
I used to assign a great deal of importance to IQ tests, but once life kicked me around a little bit, I realized that while it may have some value, it's not as high as I used to think. 😛
 
I took one online, and was going to take another to verify it, but I hate taking pointless tests, so I never did. I have no idea what I got, but remember being satisfied with the result, whatever it was.

I was told by a psychologist that online tests are crap, that a proper IQ test is done under controlled conditions by a trained professional and that it takes hours to administer.
 
I do well on standardized tests, but I recognize that they are measuring specific aspects of intelligence such as pattern recognition and symbol processing. They don't measure "people skills," or "common sense," or creativity, or ambition.

At least 2/4 things you mentioned are pretty much inarguably not a matter of intelligence.
 
I was told by a psychologist that online tests are crap, that a proper IQ test is done under controlled conditions by a trained professional and that it takes hours to administer.

Yes, this is true. I remember mine took like 3 days, at least 4 hours each session.
 
I was told by a psychologist that online tests are crap, that a proper IQ test is done under controlled conditions by a trained professional and that it takes hours to administer.

Yea, I assumed that. My criteria for picking one was "This looks kind of legit", but I don't know. That's why I was gonna take another to replicate it, but I hate tests. It's just tedious and boring. I've grown to dislike artificial puzzles in general as I've gotten older. It's just work for it's own sake, and I don't get enjoyment out of it.
 
My query is, given the stuff I've listed in my OP, how accurate are IQ tests in measuring intelligence? Does it make sense to take a couple of different IQ tests at different times to arrive at a clearer picture? Some people argue that this isn't right as the person has already become accustomed to those sort of tests after one go and that only the first one should be considered. How well do IQ tests account for flashes of insight and creativity? Perhaps, people with higher IQs are more insightful and creative. (?)

My other query is about the not very high scores of many notable scientists. I mean, they're above average but not particularly high. What does this convey (apart from the fact that drive plays a role in achievement)?
 
I was told by a psychologist that online tests are crap, that a proper IQ test is done under controlled conditions by a trained professional and that it takes hours to administer.

I've administered hundreds of the things, so I have at least a passing familiarity with them: I wouldn't say the "real" ones take hours, but you're correct in that online tests may not give you an accurate idea of your IQ, at least as would be measured by a traditional IQ test.

As for the question regarding the accuracy of IQ tests in measuring intelligence: it depends on how you're defining intelligence. Plenty of highly successful individuals score in the average or above average (rather than, say, superior) range on IQ tests, in part because, as has been said, there are plenty of things that IQ tests don't measure, with memory and drive/motivation being two of those constructs.
 
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