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Logging Data Every Frame for Mouse Reaction Time Drops out Some Trials

Win 7, version 1.84.2, Standard Standalone

I am building a Stroop task where the participants react with by the mouse. At the beginning, I used (mouse.time) in order to log the data into a csv file. I observed that RT is not logged for all trials, instead, some are dropped. I created my own clock (strTrialTimer = core.Clock()), then I checked for the click on each frame, however, the same problem appears. It disappears though only if I check for the click at the end of the routine. Any ideas?!

You need to tell us how you did what you did. For example, it is possible that the routine is able to end before a response is made. We have no way of knowing without a full description.