What is an average IQ score and above average?
I believe this is the standard scale, though I’ve seen different names used for the ranges (‘idiot’ and ‘imbecile’ used to be accepted labels, I think). 100 is average, ±10.
Well the average Human Intelligence Quotient varies depending on your source. Most sources say between 110 and 140 is normal range. Though below 70 is is considered developed mentally delayed (retarded). I hate that word!! so I do not like to use it.
Stanford-Binet IQ test was the most common but now psychologists are utilizing many more areas of intelligence, not just one standardized form. Emotional intelligence for instance is becoming a useful tool.
There is a common myth the humans only utilize 10% of their brain, this is the furthest from the truth. Human beings utilize 100% of their brain, though different pathways and retention degrees affect what we know and howmuch we can recall, but we all use 100% of our brains. More here.
ummm I don’t know what your definition of normal is but 140 ain’t “normal”, I think it’s called superior and is probably outside 2 std dev. If you go by the standard definition of IQ then 100 should be average.
This page covers it
http://home8.swipnet.se/~w-80790/Index.htm
Oh, they even have a calculator to convert other scores to IQ.
Here is the normal curve with deviation IQ scores listed across the bottom. Average is 100, standard deviation is 15. Most extant IQ tests use this scale, with the exception of the Stanford-Binet, which uses a standard deviation of 16.
Although this scale is used for full-scale IQ scores, many tests use a different scale for their subtests, generally using scale scores (mean=10, S.D.=3), or T-scores (mean=50, S.D.=10). Of course, the SB-IV has to be different, so its Area Scores use a mean of 50 and S.D. of 8, in order to be consistent with their full-scale S.D. of 16, presumably.
In theory, the mean is 100, and the standard deviation is 15 (so about 85-115 is the “normal” range). However, IQ is actually measured by standard tests, and those tests (or alternately, the people taking them) will drift a bit one way or the other. Every so often, the tests and scoring are readjusted to bring them back to 100 ± 15.
Unless you’re talking about those Internet IQ tests, in which case 100 is imbecile-level, and average is around 150.
And Dave_D’s link has a lot of good information. But be careful with their presentation of the normal curve; it has a few errors. The curve is presented with S.D.=15, as most tests use, but it is labeled as the scale for the Stanford-Binet, which uses a S.D. of 16. It also uses outdated descriptive ranges like “imbecile” and “genius” that aren’t used anymore.
Otherwise, it has good information, and the conversion calculator is fun to play with.
I’ve been IQ tested, and I remember my SAT scores. That conversion was way off.
The SAT test is not an IQ test. What it’s testing is a mixture of how good your high school education was, how good your test-taking skills are, and how much native ability at academic subjects you have (which is sort of your IQ). What those so-called conversion charts are doing is figuring what the average IQ is for those people who score a particular score on the SAT. If you get a particular score, but you went to a very good high school and are a good test-taker, those charts will probably overestimate your IQ. If you went to a lousy high school and have poor test-taking skills, the conversion charts will probably underestimate your IQ.
I think this would be an excellent time for The Master himself to interject. How about it Cecil? What’s the straight skinny on IQs?
P.S. - According to Emode I’m a genius! 142
I did an official Mensa test once under exam conditions and got an IQ reading of 168.
And as I don’t really have a clue about very much, I’d say the tests are a big pile of…(insert your choice of expletive here).