Is it possible for a person to have an IQ of 400 or more?

Answer 1

ordinary people use only 2 % of the brain's ability,
Einstein use 4 %...

it's possible...

Answer 2

Yes.

I could make the standard deviation of a test 1000, which would put my IQ at over 3100.

However, if you're talking traditional standard deviations (15 and 16 are the most common for IQ tests), then the answer is still yes.

However, the statistical rareity of a score of 400 is probably about 1 in 1 x 10^100. You would expect the smartest person to have ever walked the face of the earth to score around 210-220.

That and there are no current, commonly used IQ tests that are considered valid beyond an IQ of 160. Actually, the validity of scores over 130 is in itself very questionable. Correlations break down completely and the score becomes meaningless. The statistical rarely beyond 160 is about 1 in 100,000, and it only grows exponentially. IQ tests in themselves are not really powerful enough to measure intellect at that level (yet?). There is absolutely no question across the board; a person with an IQ of 100 is far beyond the intellect of someone IQ 70. An IQ of 130 is far beyond the intelligence of IQ 100. However, those same rules start to break down after 130. Someone of IQ 160 does not demonstrate the difference we see in lower levels when compared to someone of IQ 130. Actually, from a practical standpoint there is often not much of an intellectual difference at all.

Some suspect the differences in IQ after 130 are real, but that cultural bounds restrict the ability to express the superior intelligence. Some people think beyond 130 the test is only tapping into superior test taking skills. Who knows? Either way, I doubt you'll ever have to worry about someone scoring 400 on an IQ test :p There have been some interesting people that have made 'High range' IQ tests, which only test IQ's that are far above normal. These tests tend to tap into higher level mental abilities not tapped into by other tests. The problem with these tests though, is that the results are not reliable enough since there is no time limit, and often the questions play too much on knowledge.

Answer 3

Absolutely not.
IQ, an abbreviation for intelligence quotient, is a score derived from a set of standardized tests that were developed with the purpose of measuring a person's cognitive abilities in relation to one's age group. It is expressed as a number normalized so that the average IQ in an age group is 100 – in other words an individual scoring 115 is above-average when compared to similarly aged people.

IQ Range Classification
140 and over Genius or near genius
120-140 Very superior intelligence
110-120 Superior intelligence
90-110 Normal or average intelligence

Answer 4

For a more serious measurement you should consider taking Paul Cooijman's tests. His tests are widely accepted in the high IQ community. I am one of his highest scoring testees. I scored IQ 177 (16SD) on LIMIT, which is the highest recorded score on that test. Childhood scores are not comparable with adult deviation IQ's. I am age 20.

You are free to visit my myspace page via the below link and scroll down to inspector #7, click.

http://paulcooijmans.lunarpages.c0m /org/imho.html (replace '0' with 'o')

Have fun!

Answer 5

Using the standard testing instruments (WAIS), a score of 400 is not possible.

Answer 6

I don't believe so. I was taught that the highest IQ may reach 160 but I am not positive on that.

Answer 7

The IQ of an adult is considered unmeasurable if it is over 200

Answer 8

How would you even gage that?

Who would be smart enough to compile the test to prove it? Certainly not Alex Trebek... I mean geeze... He's Canadian for Crispt's sake!



The answer is... 42.

Answer 9

entirely possilbe. depending on the way that that test's scoring is formated. they could use any number they want.

but anything is possible the real question is what are the chances of it happening

Answer 10

i scored a 99! 400?! =o ohhhh my, why dint i score that high?