Programming a reaction time task

Hi everybody

I am looking for advice concerning a reaction time task.
the idea is that the participants see a polygon on the screen. in a first round, they should react to the polygon by pressing the space bar. in a second round, they should indicate whether the polygon appeared on the right or on the left side by pressing the corresponding arrows or alternatively L and R on the keyboard. how can this be stored in the builder as a response alternative? how would an excel file (condition file) look like?

thank you very much for all hints!

Hello Christina

take the attached example as a starting point. Press the left/right cursor key to indicate the position and space to react to the polygon.

PositionPolygon.psyexp (12.1 KB)
PositionPolyGon.xlsx (8.5 KB)

Best wishes Jens