hi,
during the practice phase of my experiment, if the subject responds incorrectly, i want to show an "error" message, and then repeat the same trial again and again until he/she responds correctly.

the only way i can think to implement this, is to jump from the practice trial (#2) to a trial showing the "error" feedback (#100) and from there back to the practice trial (#2) again.

this doesn't work. the jump from the error trial back to the practice trial doesn't happen. maybe because it's a backwards jump (from trial 100 to trial 2) or maybe because it's a "double" jump, i don't know. i tried using both the jump and the skip functions, but neither works.
i can't use the incorrect.txt solution because it will interfere with the experiment phase (after the practice phase)

any ideas?

thanks,
michal