how is the scoring done in dnb in our tool (brain workshop)
brain train
Drush D'Costa
and you can get answers to most of the question .
The default BW scoring system uses the following formula:
# score = TP / (TP + FP + FN)
# where TP is a true positive response, FN is a false negative, etc.
All
# stimulus modalities are summed together for this formula.
# The Jaeggi mode scoring system scores uses the following formula:
# score = (TP + TN) / (TP + TN + FP + FN)
# Each modality is scored separately, and the score for the whole
session
# is equal to the lowest score of any modality.
# Default: False
JAEGGI_SCORING = False
HAve fun
Jonathan Toomim
correct as well as the n-back level. If your advance and fallback
thresholds are the default (80% and 50%), then getting a 50% at n=4
gives you a score of 4.0, 80% at n=4 gives 5.0, and so forth. The
formula is this:
score = n_level + (percent_correct -
threshold_fallback)/(threshold_advance - threshold_fallback)
so:
n, % | score
-------------------
4, 0% | 2.33
4, 10% | 2.66
4, 20% | 3.00
4, 30% | 3.33
4, 40% | 3.66
4, 50% | 4.00
4, 60% | 4.33
4, 70% | 4.66
4, 80% | 5.00
4, 90% | 5.33
4, 100% | 5.66
I made the scoring work like this because I thought it gave a better
representation of your actual performance than just the average n-back
level, especially when you have a hard time getting past a level. I
really ought to document it better, though, or change the text labels
for the graph.
Undocumented hack feature: press 'm' at the graphing screen to play
around with different scoring formulae. Good luck guessing what is what,
though.
Jonathan Toomim
brain train
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