Help with this site im a little confused
Hi, This site is nice but I was just wondering is there a help section for this site.
The Performance percentage section is very confusing to me. I am not sure what the n-back threshold settings mean and what the relative baseline performance chart is. Im also confused about the bottom part where there is a z score and green and red colors. Could anyone explain these features to me?
The Performance percentage section is very confusing to me. I am not sure what the n-back threshold settings mean and what the relative baseline performance chart is. Im also confused about the bottom part where there is a z score and green and red colors. Could anyone explain these features to me?
dwak163 | 3 years ago
Reply
"n-back threshold settings"
The thresholds adjust at what score does your n-back level change automatically. If you change the upper threshold to be a larger value (closer to 1), it will be harder to move up. If you change the lower value to be higher, it will be easier to move down.
If this is confusing, you can just ignore it. You won't be missing out on anything.
If this is confusing, you can just ignore it. You won't be missing out on anything.
cognitivefun | 3 years ago
Reply
"relative baseline performance chart"
This chart shows you your average score, as compared to the past users on the site. The site average is set at 100%, and whatever you see is relative to that. If you have 110%, then you are 10% above the site average. This is actually NOT a good way to think about the performance score -- it is just here for your reference (see z-score).
cognitivefun | 3 years ago
Reply
"z score"
A Z-score measures how far a score is (in standard deviations) from the mean. In short, the larger the Z-score (positive or negative), the rarer the score is.
A familiar example is the IQ test, which is supposed to be normalized at a mean of 100, and standard deviations of around 15~16 points. An IQ of 132 would thus have a z-score of +2, because 132-100 = 32, and 32/16 = 2.
Generally speaking, a 2 (plus or minus) in z-scores is usually a pretty significant difference from the average.
The Z-scores are currently skewed by a lot of anonymous tests, which substantially moves the average to higher reaction times and lower memory spans. We should see some corrections to the average values later on.
A familiar example is the IQ test, which is supposed to be normalized at a mean of 100, and standard deviations of around 15~16 points. An IQ of 132 would thus have a z-score of +2, because 132-100 = 32, and 32/16 = 2.
Generally speaking, a 2 (plus or minus) in z-scores is usually a pretty significant difference from the average.
The Z-scores are currently skewed by a lot of anonymous tests, which substantially moves the average to higher reaction times and lower memory spans. We should see some corrections to the average values later on.
cognitivefun | 3 years ago
Reply
Consonant Span: 16.00, 3.96, 304.41, 10.78
Does this make sense? Is it really possible to have such a high z-score on Consonant Span? (This was pulled straight from the data chart on mystats.
Does this make sense? Is it really possible to have such a high z-score on Consonant Span? (This was pulled straight from the data chart on mystats.
argumzio | 3 years ago
Reply
So your z-score is 10.78, which is a crazy number. But if you compare with the average, it's not impossible:
16 - 3.96 = 12.04
12.04 / 10.78 = 1.117
With a standard deviation of 1.117, the z-score would be correct. 1.117 isn't an unreasonable standard deviation.
But I must say, 16 characters on the consonant span is absurdly high. Assuming that 1. you did not develop an efficient strategy, 2. you did not memorize a vast array of combinations such that you are quickly accessing episodic memory on top of fast pattern recognition, 3. you are not cheating: it is possible that you simply have a very large short term memory.
Remember though, that the z-scores are a bit inflated, because many people don't go as far as they can (which pulls down the average). But 16 is very startling, nonetheless.
16 - 3.96 = 12.04
12.04 / 10.78 = 1.117
With a standard deviation of 1.117, the z-score would be correct. 1.117 isn't an unreasonable standard deviation.
But I must say, 16 characters on the consonant span is absurdly high. Assuming that 1. you did not develop an efficient strategy, 2. you did not memorize a vast array of combinations such that you are quickly accessing episodic memory on top of fast pattern recognition, 3. you are not cheating: it is possible that you simply have a very large short term memory.
Remember though, that the z-scores are a bit inflated, because many people don't go as far as they can (which pulls down the average). But 16 is very startling, nonetheless.
cognitivefun | 3 years ago
Reply
I know for a fact that I have no "efficient strategy" beyond what I normally do, did not memorize combinations, and am certainly not cheating. But I'm puzzled. How is it that I would get 16 score when I've only reached an eight-consonant span? Is this merely representative of the scoring mechanism? I doubt it. It seems to me to be an error. Then again, I may be sharing my acquired ignorance.
Many thanks (for everything).
Many thanks (for everything).
argumzio | 3 years ago
Reply
argumzio | 3 years ago
Reply
thanks, been wondering what those were about.
the digit span z-scores seem to be bugged btw. the reverse digit span line shows my average as 16.67, z-score 7.06. even though I only get about 9 right without error.
how come?
the digit span z-scores seem to be bugged btw. the reverse digit span line shows my average as 16.67, z-score 7.06. even though I only get about 9 right without error.
how come?
testest | 3 years ago
Reply
It's possible to get a higher average due to the way the span is recorded, although what you see is most likely a problem. I'll have to investigate this.
cognitivefun | 3 years ago
Reply
I'd like to add in a me too to this bug.
I've only reached a 7-consonant span, but my average is 9.8 and my z-score is 5.23
This has to be a bug
I've only reached a 7-consonant span, but my average is 9.8 and my z-score is 5.23
This has to be a bug
rwac80 | 3 years ago
Reply
before anyone gets confused as to why I wrote this even though right above my post it says that the z-scores are skewed:
in my case it's MY average that's miscalculated, not the average it's weighted against. the result is probably the same (inflated z-score), but I that I should let you know.
in my case it's MY average that's miscalculated, not the average it's weighted against. the result is probably the same (inflated z-score), but I that I should let you know.
testest | 3 years ago
Reply
Updates are in progress, which will take a while (several things are getting re-programmed to ease how tests are handled now), but here are some brief responses.
cognitivefun | 3 years ago
Reply
