<div dir="ltr">Thanks for the advice. I'll stay with generating a list outside E-Prime then, seems to be the easiest way.<br><br>Am Donnerstag, 11. September 2014 16:02:25 UTC+2 schrieb ric...@wermes.de:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div dir="ltr">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.<div><br></div><div>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..</div><div><br></div><div>Any ideas for different, more ellegant approches?</div></div></blockquote></div>
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