Here's one that closely imitates Raven's Progressive Matrices and claims to have been calibrated with a sample of 250,000 people: http://www.iqtest.dk/

Here's another one: http://sifter.org/iqtest/ . I can't find any mention of where the questions came from or how it's calibrated, but it's shorter and doesn't require Flash.

Neither one asks for an e-mail address or any identifying information. They might be too easy for some on LW, but harder ones tend to cost money. As Viliam_Bur pointed out, any free online test's validity is questionable, but the first on... (Read more)(Click to expand thread. ⌘F to Expand All)Cmd/Ctrl F to expand all comments on this post

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Some data points: IQ (age 7, 14, 20) = ~145-150 S-B SAT (age 16) - 1590 = ~150 S-B iqtest.dk (age 29) = 133 S-B sifter.org/iqtest (age 29) = 139 S-B (159 euro scale)

I don't use my spacial skills in my daily work they way I used to use them in my daily school work, and both online tests seem to measure only that.

I found the second test much more difficult - there wasn't enough information to derive the exact missing item, so you had to choose things that could be explained with the simplest/least rules. There were some where I disagreed that the correc... (Read more)(Click to expand thread. ⌘F to Expand All)Cmd/Ctrl F to expand all comments on this post

0MarkusRamikin8y I got 130 on the first one and 156/137 on the second. Going with the lower result for the purpose of Yvain's survey. I found the second result a little suspect because a lot of questions on the second test made little sense to me. I would often see 2-3 possible answers that made more or less equal (small) sense to me, and had to take a gut feeling guess on which the author might have possibly meant. Maybe I just got lucky. Or my gut is a better thinker than I suspected.
1[anonymous]8y The first test gave me a score a few points below that on the Mensa site I did a few years ago, but I gave up early on a few questions (I had about 10 minutes left when I finished). One weird thing about it is that there were so many questions based essentially on the same idea, which makes me think it would be possible to have a test with not-too-much-worse accuracy but half as many questions (unless they intended to test ‘stamina’ as well -- but I'd guess that that varies more for a same person depending on how much they've slept recently than across people).

2011 Less Wrong Census / Survey

by Scott Alexander 8y1st Nov 2011699 comments

77


The final straw was noticing a comment referring to "the most recent survey I know of" and realizing it was from May 2009. I think it is well past time for another survey, so here is one now.

Click here to take the survey

I've tried to keep the structure of the last survey intact so it will be easy to compare results and see changes over time, but there were a few problems with the last survey that required changes, and a few questions from the last survey that just didn't apply as much anymore (how many people have strong feelings on Three Worlds Collide these days?)

Please try to give serious answers that are easy to process by computer (see the introduction). And please let me know as soon as possible if there are any security problems (people other than me who can access the data) or any absolutely awful questions.

I will probably run the survey for about a month unless new people stop responding well before that. Like the last survey, I'll try to calculate some results myself and release the raw data (minus the people who want to keep theirs private) for anyone else who wants to examine it.

Like the last survey, if you take it and post that you took it here, I will upvote you, and I hope other people will upvote you too.