Here's the distribution of time people spend reviewing cards at quantum.country. The median time is about 6 seconds. The _average_ time is almost twice as long, at 11 seconds!
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I find this fascinating. It suggests people mostly fly through at a steady clip, about 5-8 secs per card, but they're occasionally getting stuck, taking 10-20 secs for an outlier card.
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One model I like for thinking about spaced repetition review is that it should be almost meditative: you get into a zone. Outlier cards break that zone.
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I'm really not sure of that model, though. Another model is that it's _good_ to occasionally get stuck, to have things broken up. People often dislike this feeling, & feel that they're learning less, but there's quite a bit of research suggesting they're just wrong.
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So I'm kind of split about this. Should we try to eliminate outlier cards? Or are they really a feature? Not sure!
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Caveat: it's tricky to interpret such data.
Maybe people are getting distracted, & that's why some review times are long - "oops, need to pay for my coffee!" Much beyond 20s, & I'll bet that's what is going on.
But there's a lot 10-20s too, so I don't entirely buy that.
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Interesting! What are the units? Seconds? Minutes? And how is thinking_time defined?
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If it is minutes, that would be pretty consistent! It’s hard for me to imagine that the overwhelming majority of your reviews would be completed in less than one second. I wonder if it also tracks seconds, if my guess is right.
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I should also mention that we dropped all durations greater than 50 seconds in that analysis, to try to remove obvious idling outliers. Those were <2% of samples, iirc