The "blacklist" parameter prevents that you get the same challenge twice. Note also that it submits every answer to the server (fine imo, but I think it would be even nicer if this was mentioned on the page)
I wish this had a "I can't tell" option. A few of the really hard ones I got right, but I'd say it was more of a lucky guess than a genuine ability to discriminate the difference.
This is from the creator of the ScienceClic YouTube channel [0]:
“As part of the next video, which will be out in a few weeks, l'd like to invite you to take part in an experiment about color perception. If you don't experience color blindness, l'd greatly appreciate it if you could take this test. Feel free to try it as many times as you like, think about it as a game!”
Would be interesting to get some basic analysis of my results. From a glance it appeared that the ones I missed (6) tended towards red. The low saturation ones and green ones I found to be easiest, but was there any actual significance of the distribution of my errors? Simply too small a set to say?
I got the same number wrong but I've passed every Ishihara test ever thrown at me. I did this test on a cheap mobile that's not calibrated, so it's anyone guess what its gamma and transfer curves are like.
One should only take such tests seriously if one's using a properly calibrated monitor and it's viewed under ideal viewing conditions.
17 out of 20. Was super easy until #10 and I had to stop and think more carefully (which was actually my first mistake), and then I got #14 and #15 wrong. The score was about what I expected, though - would've been surprised if it was <15 correct.
I wonder how much of this would come down to screen calibration / color accuracy? If everything's consistently off in 1 direction I guess not much, but I would imagine certain shades might appear effectively the same on some cheaper screens?
19/20. The first many were very obvious. I missed #14 and I think right around there I started to slow down because the differences were getting smaller. Looking away and then coming back helped, I think. It seemed like if you look at them too long, whichever circle you're looking at seems to shift color and it becomes really hard to discern the difference.
Interesting. I only got 15/20, and previously considered myself "above average" at colour distinction tests but based on other replies that's not an especially good score. I'll try again, going more carefully.
Ah, yes, 19/20 the second time (only the last one wrong).
The first time I kept my eyes fixed in the same place roughly in the middle which clearly wasn't a good idea. On the second attempt I glanced between each circle in turn, trying to discern the difference over two points in time rather than two points in space.
Shouldn't there also be a few "control" challenges sprinkled in where all three are the same color and there's no "right" answer? If the test is implemented well and/or there is no human bias (either from the previous question or from the positioning of the circles), then you'd expect to see a uniform distribution of answers on the control. If there is bias (e.g. some innate preference for the top circle (say)), that should get adjusted for in the final analysis.
14/20. Increased brightness to full, turned off blue light filter (aka night light on Android), zoomed in, scrolled the circles up and down to dissipate after image from eyes, 19/20.
Not sure what to make of this. Most looked the same and I couldn't tell if I was really seeing a difference or not. 12/20. (And I am color blind, so not sure if that has a lot to do with it or not.)
18/20 on an uncalibrated "gamer" spec display with windows' late night colour yellowing turned on. I'd argue spec/calibration isn't maybe that important, as long as a difference can be spotted.
What stood out a lot in this exercise is that when looking at, versus near a disc, its luminance (or maybe the color as well) is perceived as changing. Almost the same i have when staring at not too bright stars, they seem to disappear when staring directly on them.
And related, I once had an 'eye migrane'. During that half an hour, the figures of a clock disappeared the moment i looked at them.
I'm curious how the eye migraine is related. I had one many, many years ago. It was a smallish (palm at arm's length) oval in the center of my vision that looked like snow on an analog TV, accompanied by a feeling of overwhelmed by all the colors of the products on the shelves (I was in a grocery). It stuck around for about half an hour for me as well.
I've also had eye floaters which cause things to distort and can be hard to see through. For about 6 months I had a large one in the center of my left eye vision, which was a bit scary when I discovered I might not see a car reflected in my wing mirror.
Similar experience. What surprised me: sometimes the odd-one-out was really quick/easy to see, and other times it took much longer & I thought "at the end, they'll say all disks were the same color".
17 out of 20. good enough for me. actually, i wonder how many of the 17 were just lucky guesses haha! they mention data in the end screen, i wonder if it will be made public (so i can see where in the bell curve i sit)
How do I know my screen can display all of these correctly? I tried on three different screens, one of which I know is bad, and got 16, 16, 18. Is those two mistakes the error margin of the screen if my eyes are fine, or much more likely to be the error margin of my eyes?
For those reporting scores: please also report device type, like LCD/OLED, or which phone model if applicable. Tweakers.net has a large database of screen color measurements. As mentioned in e.g. https://news.ycombinator.com/item?id=43746400, it can make quite a difference
My 18 score was on an Oppo Reno8, the 16 score on the not-known-bad screen is some ~2008 display. On the former, Tweakers reports an average color error of 3.42 ΔE2000, 9.58 ΔEITP, or 2.60 ΔE2000 if white is excluded
I think this would be more fun if it started out easier, but most importantly if it gave you some real world stats at the end, such as how you compare to others, or whether you're colorblind etc.
I was wondering if it got harder or if it's just random:
Plotting that first magic: https://lucb1e.com/randomprojects/js/testformula.htm#%24%28%... The "blacklist" parameter prevents that you get the same challenge twice. Note also that it submits every answer to the server (fine imo, but I think it would be even nicer if this was mentioned on the page)I wish this had a "I can't tell" option. A few of the really hard ones I got right, but I'd say it was more of a lucky guess than a genuine ability to discriminate the difference.
Quite. With the odds being 1 to 3 you'll pick the right one when you have to click one at random to proceed, the results get skewed.
If you repeat the test a few times, it'll average out.
That's why there's 20 rounds I guess. If you could just press "all the same" it wouldn't have to be as many
This is from the creator of the ScienceClic YouTube channel [0]:
“As part of the next video, which will be out in a few weeks, l'd like to invite you to take part in an experiment about color perception. If you don't experience color blindness, l'd greatly appreciate it if you could take this test. Feel free to try it as many times as you like, think about it as a game!”
[0] https://youtube.com/@scienceclicen
Would be interesting to get some basic analysis of my results. From a glance it appeared that the ones I missed (6) tended towards red. The low saturation ones and green ones I found to be easiest, but was there any actual significance of the distribution of my errors? Simply too small a set to say?
I got the same number wrong but I've passed every Ishihara test ever thrown at me. I did this test on a cheap mobile that's not calibrated, so it's anyone guess what its gamma and transfer curves are like.
One should only take such tests seriously if one's using a properly calibrated monitor and it's viewed under ideal viewing conditions.
17 out of 20. Was super easy until #10 and I had to stop and think more carefully (which was actually my first mistake), and then I got #14 and #15 wrong. The score was about what I expected, though - would've been surprised if it was <15 correct.
I wonder how much of this would come down to screen calibration / color accuracy? If everything's consistently off in 1 direction I guess not much, but I would imagine certain shades might appear effectively the same on some cheaper screens?
19/20. The first many were very obvious. I missed #14 and I think right around there I started to slow down because the differences were getting smaller. Looking away and then coming back helped, I think. It seemed like if you look at them too long, whichever circle you're looking at seems to shift color and it becomes really hard to discern the difference.
Interesting. I only got 15/20, and previously considered myself "above average" at colour distinction tests but based on other replies that's not an especially good score. I'll try again, going more carefully.
Ah, yes, 19/20 the second time (only the last one wrong).
The first time I kept my eyes fixed in the same place roughly in the middle which clearly wasn't a good idea. On the second attempt I glanced between each circle in turn, trying to discern the difference over two points in time rather than two points in space.
Shouldn't there also be a few "control" challenges sprinkled in where all three are the same color and there's no "right" answer? If the test is implemented well and/or there is no human bias (either from the previous question or from the positioning of the circles), then you'd expect to see a uniform distribution of answers on the control. If there is bias (e.g. some innate preference for the top circle (say)), that should get adjusted for in the final analysis.
How much of the result is vision accuracy and how much is dependant of the display?
As I've mentioned, you can't take this seriously unless you've a properly calibrated monitor.
14/20. Increased brightness to full, turned off blue light filter (aka night light on Android), zoomed in, scrolled the circles up and down to dissipate after image from eyes, 19/20.
Was way easier after deactivating the Android night light.
Not sure what to make of this. Most looked the same and I couldn't tell if I was really seeing a difference or not. 12/20. (And I am color blind, so not sure if that has a lot to do with it or not.)
I got 17/20, but then again I have a high-end NEC PA302W hardware color-calibrated monitor.
18/20 on an uncalibrated "gamer" spec display with windows' late night colour yellowing turned on. I'd argue spec/calibration isn't maybe that important, as long as a difference can be spotted.
18/20 on an iPhone – they’ve have Display P3 wide colour for many years.
I think it matters what colors you looked at in the previous screen. It takes a while for the eyes to adjust.
What stood out a lot in this exercise is that when looking at, versus near a disc, its luminance (or maybe the color as well) is perceived as changing. Almost the same i have when staring at not too bright stars, they seem to disappear when staring directly on them.
And related, I once had an 'eye migrane'. During that half an hour, the figures of a clock disappeared the moment i looked at them.
I'm curious how the eye migraine is related. I had one many, many years ago. It was a smallish (palm at arm's length) oval in the center of my vision that looked like snow on an analog TV, accompanied by a feeling of overwhelmed by all the colors of the products on the shelves (I was in a grocery). It stuck around for about half an hour for me as well.
I've also had eye floaters which cause things to distort and can be hard to see through. For about 6 months I had a large one in the center of my left eye vision, which was a bit scary when I discovered I might not see a car reflected in my wing mirror.
Similar experience. What surprised me: sometimes the odd-one-out was really quick/easy to see, and other times it took much longer & I thought "at the end, they'll say all disks were the same color".
Got 14/20
Browser > right click on the dot > inspect the RGB numbers
The first line on the page says
> Click the disk that's a different color. Use your eyes only!
Inspecting the color is cheating.
Clever.
13 out of 20 for me. Would've been 14 but I misclicked on one early on.
17/20
Wonder how big an influence the type and quality of screen has. Do OLEDS give an advantage for instance?
My 14/20 went up to 18/20 after I turned up my phone brightness.
17 out of 20. good enough for me. actually, i wonder how many of the 17 were just lucky guesses haha! they mention data in the end screen, i wonder if it will be made public (so i can see where in the bell curve i sit)
How do I know my screen can display all of these correctly? I tried on three different screens, one of which I know is bad, and got 16, 16, 18. Is those two mistakes the error margin of the screen if my eyes are fine, or much more likely to be the error margin of my eyes?
For those reporting scores: please also report device type, like LCD/OLED, or which phone model if applicable. Tweakers.net has a large database of screen color measurements. As mentioned in e.g. https://news.ycombinator.com/item?id=43746400, it can make quite a difference
My 18 score was on an Oppo Reno8, the 16 score on the not-known-bad screen is some ~2008 display. On the former, Tweakers reports an average color error of 3.42 ΔE2000, 9.58 ΔEITP, or 2.60 ΔE2000 if white is excluded
18/20 correct, I think I did well? Interesting how sometimes it's more of a feeling than an objective perception.
At the end it says I can play again, because it'll generate more data. But for what?
It'd be cool to see some stats, or learn a bit more about what I just did...
19/20 the neon blue one really messed with my head and kind of hurt to look at for some reason, so I am not surprised I got it wrong.
I think this would be more fun if it started out easier, but most importantly if it gave you some real world stats at the end, such as how you compare to others, or whether you're colorblind etc.
I found it did start out really easy, getting harder half way. You might have some form of colour blindness (or a really bad monitor).
7/20. I'm also red green colorblind so that likely has something to do with it. Could also be the phone screen I'm looking at.
With phone screen on full brightness I was able to get 14/20.
19/20 somehow on my first try. Near the end was just tiny differences in saturation or brightness.
Black text on dark grey background, sorry, that's too hard to read.
Your score: 20 out of 20. Mistakes: 0
Tried it briefly, upto 6. Got all right. Gonna do more later.
Need some interesting optical illusion type of posts on HN!
Escher's creations are cool. Our chemistry teacher introduced us to them in school.
https://en.m.wikipedia.org/wiki/M._C._Escher