OS: macOS 15.1
PsychoPy version: 2024.2.4
Standard Standalone? (y/n): Yes
What are you trying to achieve?:
I aim to accurately record keyboard responses during each trial of my experiment. Specifically, I want to ensure that:
- If a participant presses the correct key, the system registers a correct response.
- If a participant presses an incorrect key, the system registers an incorrect response.
- If no key is pressed, the system registers no response.
What did you try to make it work?:
- Resetting Keyboard Response Variables: At the beginning of each trial, I reset the keyboard response variables:
task_resp.keys = None
task_resp.corr = None
- Clearing Event Queue: I used
event.clearEvents()
at the start of each trial to clear any residual keypress events:
from psychopy import event
event.clearEvents()
- Modifying Key Detection Logic: I adjusted the logic to first check for key presses before evaluating correctness:
result = ''
color = ''
if task_resp.keys: # Check for keypress
if task_resp.corr == 1: # Correct keypress
result = '✓'
color = 'green'
else: # Incorrect keypress
result = 'x'
color = 'red'
else: # No keypress
result = 'No response'
color = 'gray'
- Consulting PsychoPy Community Discussions: I referred to the following discussions for potential solutions:
- Bug report: Keyboard Response event doesn’t discard previous
- Keyboard component alive even after the routine is over
- Multiple keyboard inputs cause the next routine that utilizes that input to be skipped
What specifically went wrong when you tried that?:
Despite implementing these solutions, the issue persists:
- When no key is pressed during a trial, the system incorrectly registers a correct response.
- In the subsequent trial, even when the correct key is pressed, it registers as incorrect.
There are no error messages displayed; however, the response accuracy is compromised, affecting the integrity of the experiment’s data.
I have also ensured that PsychoPy has the necessary input monitoring permissions on my Mac, as suggested in similar discussions.
I would appreciate any guidance or suggestions to resolve this issue.
Thank you for your assistance.