Script for redoing a trial up to 16 times or untill response

[Michiel Spape]

Hi Julia,
 
How about this? A bit late, so maybe I'm making a couple of errors myself, but I hope it helps.
 
Dim count as string  ' this should be in the user script, else the count is reset
 
count=0 ' this should be at the start of the trial, else it starts at 0 every time

'after the StimuliArray... I suppose this is a textDisplay or something?:
if (StimuliArray.Resp = "") AND (count < 17) then   'if no response is given and the number of that happened (count) is smaller than 17
   count = count + 1   'then continue counting
   goto ShowStimAgain   'and go back AFTER counting (otherwise it never counts because it went to the label before that)
   end if  'and to end a while statement, I think e-prime expects you to use WEnd; 
 
Cheers,
 
Michiel Spapé
 
 

________________________________

Van: e-prime at googlegroups.com namens Julia Gomez
Verzonden: do 24-4-2008 2:12
Aan: e-prime at googlegroups.com
Onderwerp: Script for redoing a trial up to 16 times or untill response


Hi everyone,

Could anyone help with the following script? I am doing a interrupted visual search task. I am presenting a screen with the stimuli array for the search task followed by another screen with a blank screen. Once a trial has started I would like this trial to repeat (i.e stimuli array and white screen over and over) until a maximum of 16 times or  until the participant responds. I created the following script but is giving me an error. I am not familiar writing scripts in eprime.

Dim count as string 
 
count=0 

While count<17 ' I need to repeat a trial up to 16 times or until response
   If StimuliArray.RESP = " " Then ' I am not sure how to tell eprime if there is no response. 
       Goto ShowStimAgain ' this is a label that I inserted after the fixation cross
   End If 
count = count +1 
End 

Any help would be very appreciated. 

Thanks

Julia Gómez




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