If this template helps then use it. If not then just delete and start from scratch. OS (e.g. Win10): Mac Sequoia 15.5 PsychoPy version (e.g. 2024.2.4 Py 3.8): 2025.1.1, using builder mode Standard Standalone Installation? (y/n) If not then what?: yes I think so Do you want it to also run online…

print prints to the stdout tab of the runner (or the developer tools console online. To print to the screen you need to either put a variable in the text component or setting the text component in a code component.

Thank you! This works. Any ideas on how to print multiple outputs to the screen over time? My other test has multiple laps we need to collect timestamps for. I have the test set up to loop through the laps, and I do successfully record the length of time of each lap in in log file, but I would also…

Hello @SMM you can print a variable to the console with the following print-command print("_40mwt_lapend: ", _40mwt_lapend) I do not see a routine called lapped_routine in your flow. I noticed in the flow that you created a couple of routines with similar names, e.g. routine_4MWT1 and routine_40…

Hi Jens! Thank you so much for your reply! Unfortunately, I am having trouble getting that solution to work. After troubleshooting some more, I believe the issue is how I am defining _40mwt_lapend. When I remove that line, the script runs. Is there a specific syntax I should use when subtracting t…

[image] SMM: I believe the issue is how I am defining _40mwt_lapend .stopped is not directly available during the experiment I would recommend creating bespoke timers with e.g. myClock = core.Clock() and then reading them with myClock.getTime() and resetting them with myClock.reset()

Thanks for the help, and apologies for my delay, I wasn’t getting anywhere and needed to step away from this project for a bit. I’ve tried to start from scratch to see if I can better understand how to implement the bespoke timers you had mentioned. Unfortunately I haven’t made much progress. I’ve …

Here’s one of my tips to dissuade you from over-importing. [image] Wakefield's Daily Tips Blog Builder isn’t Coder I strongly discourage the use of PsychoPy Coder for the creation of psychology experiments because Builder is easier to debug, share with others …

Hello @SMM I edited your experiment such that it at least runs. It might not run in the way you intended. It is not clear to me what the start and stop-keypressed should do. Timer_test_Jan2.psyexp (17.0 KB) Notice, that I still load the Python-Library math to use the function floor. Best wishes …

Hi Jens. Thank you very much. The goal of the project is to record the amount of time it takes a participant to perform a test (not on the computer). Just a simple stopwatch. The reason to use Psychopy for this and not an actual stopwatch is that I need to integrate LSL to sync event codes to a re…

Hello @SMM [image] SMM: My issue is with how I am defining timeMess/showTime in ‘each frame’. I get an error that states: showTime = CurrTime-StartTime[curlap] IndexError: list index out of range What is the value of the index curlap at that moment? Perhaps you just have to wait one frame? …

How to print keyboard press response time

Builder

wakecarter January 7, 2026, 9:55pm 8

Here’s one of my tips to dissuade you from over-importing.

Topic		Replies	Views
Digital Clock during experiment Coding timing	12	1881	May 21, 2024
Reaction Time without Keyboard Component Builder	13	1682	May 9, 2020
Logging reaction times for longer than one routine Builder	11	1549	February 25, 2019
Time-based response: show elapsed time and pause task Builder timing	0	1021	March 27, 2020
Keyboard press response time from trial onset with coding component Coding	5	1201	October 26, 2022

How to print keyboard press response time

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