[HN Gopher] Raven's matrices
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Raven's matrices
Author : andsoitis
Score : 32 points
Date : 2023-07-16 22:37 UTC (2 days ago)
(HTM) web link (sep.stanford.edu)
(TXT) w3m dump (sep.stanford.edu)
| splendo21 wrote:
| The author has a wonderful book
| (https://sepwww.stanford.edu/sep/prof/fgdp/toc_html/) that's a
| mix of physics, signal processing, statistics, and matrix
| algebra.
| pk-protect-ai wrote:
| I wonder, why he has refused to do the last test it looks
| pretty easy... It is an addition test with loops directed
| inside are negative numbers and loops directed outside the
| positive numbers. Or I'm totally wrong and something different
| is expected ...
| kccqzy wrote:
| I don't know how IQ tests are supposed to be conducted, but when
| I first heard of Raven's matrices in middle school, I jokingly
| asked all my friends to do it. What struck me at that time was
| that for almost all of my friends, there were no questions that
| were too difficult to be solved, but there _was_ a pretty large
| variability in the time taken to complete the test. For some of
| the friends, answering the questions required a lengthy logical
| deduction process; for others they almost picked the answer just
| by intuition and then justified it afterwards.
|
| At that time my takeaway was that an IQ test with a generous time
| limit probably meant nothing, but an IQ test with a strict time
| limit could probably test intuition.
|
| That said the utility of testing intuition still isn't clear to
| me.
| caditinpiscinam wrote:
| > Seriously though, what should be our relationship with those
| fated to be born less gifted than ourselves? Two ways to look at
| this: (1) What should USA race policies be? (2) In your declining
| years you write a will to disburse your estate. Assuming your
| children vary widely in intellect, health, wealth, and honesty
| (as countries do), what should your policies be?
|
| It's wild to me that people view the world this way.
| jlund-molfese wrote:
| Yeah what's up with that? I was reading the page and it seemed
| fun, then suddenly it goes into some rant about, I think,
| immigration? Not sure what a "race policy" is even supposed to
| be.
| jepler wrote:
| yikes
| paulpauper wrote:
| It seems like too many people score well on this test for it to
| be useful anymore , due to the Flynn Effect or other factors. I
| got a top score
| [deleted]
| AdamH12113 wrote:
| I found a link to the original standard question set:
|
| https://pdfhost.io/v/iaIChY.6O_Ravens_Standard_Progressive_M...
|
| There are two other sets -- a colored set designed for children
| and an advanced set for older teenagers and adults.
| schubart wrote:
| It says > A newer test (complete, free) is at https://iqpro.org/.
| This site asks you 60 test questions, then asks for your personal
| data, then charges 20 Euros to show how you scored.
| biomcgary wrote:
| It is a gullibility test masquerading as an IQ test.
| rom16384 wrote:
| Take this test instead:
| https://openpsychometrics.org/tests/FSIQ/ It's free and IMO the
| best of the free tests.
| caditinpiscinam wrote:
| I'm skeptical, given that first section is testing vocab --
| not "infer what this word means from context", but just
| straight-up "how many words do you know", which I don't think
| has much to do with intelligence (whatever that means).
| yorwba wrote:
| At the end you'll get separate results for Memory IQ,
| Verbal IQ and Spatial IQ in addition to the overall score.
| So if you don't think knowing words has to do with
| intelligence, you can just ignore the verbal part.
| caditinpiscinam wrote:
| I'm skeptical of other parts of it as well; for example,
| one of the memory sections uses logos from popular
| software projects (inkscape, gnome, etc). It was a lot
| easier to remember the logos I'd seen before vs the ones
| I hadn't.
|
| I think it's a neat test, and I'm curious to compare
| results with my friend who's an artist (I found the
| visual components challenging). But it seems less robust
| than something like ravens matrices.
| pfedak wrote:
| The justification on the main page doesn't inspire confidence:
|
| > IQ test reports costs 19.99 due to increased costs associated
| with collection, updation and normalization of data.
| plagiarist wrote:
| The real IQ test is whether or not you'll pay $20 on that
| justification
| SomeRndName11 wrote:
| What if you are very reach and $20 means nothing to your (I
| myself poor, $20 is big deal for me)
| jacknews wrote:
| I found the last question quite easy.
|
| I have a set of books of these and some of them are much harder.
|
| There are also the similar bongard problems.
| Detrytus wrote:
| Yes, the whole test seemed quite easy, but then in the end I
| only scored 129. I guess if I spent more time on it, and
| haven't been mildly drunk I could do better.
|
| Also, "raw test score" was 57/60 (so I got only 3 questions
| wrong). Given that, I wonder how they scale scores from 129 to
| 140 and beyond - do they only count correct answers, or time
| taken as well?
|
| Also: it's a pity they only support PayPal as payment method -
| I needed to create throwaway account just for this one
| transaction.
| ralfd wrote:
| > This is the last question in the test. I did not even try it.
| Enjoy
|
| Maybe 2? I can only guess what the answer is. I don't the rule of
| sequence here?
| zh3 wrote:
| Just add the polarity of the loop counts (my solution, no idea
| if it's the right one).
| jcranmer wrote:
| I got 5: 1 inside + 3 outside = 2 outside. The other two rows
| look to be 4 inside + 1 outside = 3 inside and 3 outside + 2
| outside = 5 outside.
| pexabit wrote:
| Just addition with inside positive and outside negative (or
| vice-versa)
| AdamH12113 wrote:
| It is 5 [edit for clarification: the answer is choice number 5,
| the numerical answer is 2]. Each image represents a positive or
| negative number. Adding the first two items in a row gives you
| the third. Alternately, adding the last two items in a column
| gives you the first.
| unepipe wrote:
| so it's 5, not 2. an outer and inner cancel each other out.
| then the remaining whether inside or outside are added to
| that same side.
| AdamH12113 wrote:
| Sorry, I was mixing up the numerical answer and the choice
| number. The answer is choice #5 in the list; the numerical
| answer is 2.
| zh3 wrote:
| So is that last one just a simple +/-, or (like a lot of these
| tests) there are alternative solutions and I've simply got the
| "wrong" one?
| exo-pla-net wrote:
| Flynn effect. It's indeed trivial.
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