IMO this is quite easy to figure out for oneself though: doodle in class a couple of times and then use a control condition that you see fit. If you notice a c

IMO this is quite easy to figure out for oneself though: doodle in class a couple of times and then use a control condition that you see fit. If you notice a clear difference while you weren't hyper vigilant about all of this, then doodling has an impact on you. I've done exactly this but then regarding cycling to work vs. metro to work. Cycling is much better as I was able to clearly notice that I was more awake.