More on topic, I recently switched the option for visual feedback (n
stimuli to go, correct/incorrect visual/audio press, help docs etc.)
during a round to be off; I'd always done it with on, with I think is
the default for Brain Workshop? I figured that it would make my scores
plummet, and was curious how much it would hurt me. To my great
surprise, the effect seems to have been just the opposite. Here's a
week of my stats:
# switched to no feedback
Perhaps I coincidentally improved at D4B such that I could get a 95%
right (my highest ever in D4B) and pick up a bunch of 70s and 80s, but
I suspect it's the lack of feedback. I had weakly endorsed turning off
the feedback in the FAQ:
But I wonder if I should change that section. Does anyone who didn't
comment in the 2 linked threads (2008 & 2009) have a fresh opinion on
Maybe if I find the time, I'll try to look for the papers on the
subject which my labmates and PI alleged existed. You guys might find
a glance at the abstracts worthwhile.
Anyway, I think it's generally a good idea to leave feedback on, since
the point of doing DNB is the learning process that the task provides,
not the task itself. However, it might make sense to turn feedback
off temporarily if you're struggling at a new level. Removing the
distraction of feedback might be the all you need in order to be able
to perform above the fallback threshold (i.e., 50%) long enough to get
used to the higher difficulty.
One thing in particular about how BW does feedback that kinda bothers
me: I think that the visual feedback causes people to tend to move
their gaze away from the fixation cross right before the next trial
when they miss a match, and that's probably bad. When doing
psychophysics, I've usually used auditory feedback. Since there are
so many different modalities in BW, though, it would probably be
difficult to create auditory feedback that would tell the user which
match was missed. Maybe there's something else that can be done to
minimize the problem, such as not changing the font to bold for misses
so that there's no motion in the text, just a color change. Hmm...
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I would have to agree though that at other tasks at lumosity the sound
feedback is distracting and in several cases I have thought of turning
My first impression is that turning off the gridlines is as brutal as
turning off the feedback.
# disabled gridlines
I won't be getting any 95%s with gridlines off any time soon, that's for sure.