If this template helps then use it. If not then just delete and start from scratch.
OS (e.g. Win10): Win10
PsychoPy version (e.g. 1.84.x): 2020.2.4, 64bit
Standard Standalone? (y/n) Y
What are you trying to achieve?:
I want two participants to do the experiment(an attention task) at the same time and start simultaneously.
What did you try to make it work?:
The task is that first a small circle appears as a fixation point in the middle of the screen and then the participant presses the Space key and after that, cue appears on one of the four sides of the screen and then four images appear on the fours sides of screen and then in one moment, the brightness of one of the images changes, and if the participant detects it, he/she presses the Right key on the keyboard (in 80% of cases, the cued image brightness changes).
Now I want the two participants to do this experiment at the same time so that in half of the cases the changes in one image happened to both (the same trial) and in half the cases the changes in different images happened.
What specifically went wrong when you tried that?:
The experiment should start when both people have pressed the Space button. Do I need to use two different keyboards and screens(window) for participants to do this experiment?
Since I am a beginner in Python, can this be done in a builder environment?
Thanks so much for any tips.