Go/No-Go Task Programming (David McFarlane?)

[gugs]

Hi David

I actually did put a CorrAnswer tribute in the Trial List.  I dont think 
the second topic applies to me because the length of the trial does not 
change based on the response - i.e. I simply want to log the accuracy and 
speed of the response - the stimulus will stay on the screen even if they 
responded in the stimulus period (and not the wait period).  

With regards to the trial list - is an empty cell = blank or does it have 
to have "" inside it? From the EPrime knowledge base it looks like it 
should be blank but from Anne-Wil's response it looks like it should have 
"" inside it. 

Regards.

On Thursday, December 6, 2012 1:03:21 AM UTC+11, McFarlane, David wrote:
>
> Before going any further, please see 
> http://www.pstnet.com/support/kb.asp?TopicID=1340 and 
> http://www.pstnet.com/support/kb.asp?TopicID=5370 . 
>
> ----- 
> David McFarlane 
> E-Prime training online: 
> http://psychology.msu.edu/Workshops_Courses/eprime.aspx 
> Twitter:  @EPrimeMaster (twitter.com/EPrimeMaster) 
>
> /----------- 
> Stock reminder:  1) I do not work for PST.  2) PST's trained staff take 
> any and all questions at 
> http://support.pstnet.com/e%2Dprime/support/login.asp , and they strive 
> to respond to all requests in 24-48 hours, so make full use of it.  3) 
> In addition, PST offers several instructional videos on their YouTube 
> channel (http://www.youtube.com/user/PSTNET ).  4) If you do get an 
> answer from PST staff, please extend the courtesy of posting their reply 
> back here for the sake of others. 
> \----------- 
>
>
> Anne-Wil wrote: 
> > Hi Gugs, 
> > 
> > a quick first thought: did you indicate the correct response to be "" 
> > (e.g. nothing between " 's) for the trials in which 'nothing' is the 
> > correct response? 
> > 
> > On Wednesday, 5 December 2012 02:55:23 UTC+1, gugs wrote: 
> > 
> >     Hi All, 
> >     I posted a query on the e-prime discussion forum last week but 
> >     haven't had any replies yet.  The main issue I am having in 
> >     programming a go/no-go task is that the acc column is incorrectly 
> >     returning a 0 when the answer is correct (but only for cases where 
> >     an individual should not be responding to the stimulus). 
> > 
> >     I have posted the detail here: 
> >     https://www.pstnet.com/forum/Topic6489-23-1.aspx 
> >     <https://www.pstnet.com/forum/Topic6489-23-1.aspx>, but I will post 
> >     them here as well in case someone has an idea of how to correct 
> >     this.  David - I know you are generally answered a lot of go/no-go 
> >     extended input type queries so I was hoping you might know. 
> > 
> >     =============== 
> > 
> >     The task is fairly simple - an either emotive (i.e. happy, sad) or 
> >     neutral word will appear on the screen for 300 ms, followed by a 
> >     blank screen for 1200 seconds (for a total of 1500 ms). The 
> >     participant needs to press the letter g if the word is neutral or do 
> >     nothing if the word is emotive. Pressing the key should log a 
> >     response time, but should not end the stimulus event (i.e. the 
> >     stimulus+blank screen will always run for 1500 ms even if the 
> >     participant responds within the first 300 ms). The participant can 
> >     respond anytime throughout that 1500 msec. I understand this is 
> >     called "extended input" - which I have accounted for by making the 
> >     time limit>duration. 
> > 
> >     My biggest problem that I noticed is that my RESP Acc is coming back 
> >     as 0 when the correct action is to do nothing, and the person has 
> >     not pressed any key. Do you know why this is? 
> > 
> >     I have uploaded a simple example file showing just 4 practice 
> >     trials. If someone who is experienced could take a look at it it 
> >     would be much appreciated - I am all alone in my department working 
> >     with e-prime and there is noone to really talk to here [Ermm] 
> > 
> >     =================== 
> > 
> >     P.S. I tried to attach the file here but it was giving me issues... 
> > 
> >     Many thanks again! 
>
>

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