Continuous Performance Task

[richard at wermes.de]

Thanks for the advice. I'll stay with generating a list outside E-Prime 
then, seems to be the easiest way.

Am Donnerstag, 11. September 2014 16:02:25 UTC+2 schrieb ric... at wermes.de:
>
> I would like to implement a Continuous Performance Task (CTP). With this 
> task, single letters are presented and subjects are asked to react whenever 
> they detect an X, appearing after an O appeared. I need about 500 trials 
> for that and lets say 50 target-combinations.
>
> The only idea that come to my mind was creating a list including the 
> variables stimulus1 and stimulus2, including a procedure showing two 
> textdisplays in a row (stimulus1 and stimulus2). My problem with that: I 
> would need 250 rows in that list. If I had less rows and random cycles, i 
> might get additional unwanted target-combinations..
>
> Any ideas for different, more ellegant approches?
>

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