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

[Anne-Wil]

Hey Gugs,

Turns out that I was mistaken - the "" thing is needed when you fetch a 
response with in inline (get slide1.acc and then compare it to some 
corranswer attribute). However... I did a little bit of fiddling around 
with your program (from the PST boards) and neither method seems to work 
within your set-up. Personally I am totally at a loss why that is, I have 
used both methods often in the past :/ . Maybe it has something to do with 
that extended response period (I never used that and noticed that there was 
some 'new to me' setting applied to the keyboard input on the second 
textdisplay? (I always slides rather than textdisplays but I cannot imagine 
that that would be the problem here). Maybe David could shed some light on 
it - or perhaps you should rebuild the thing from scratch.... every now and 
then that helps without it ever becoming clear what went wrong in the first 
version >.>

On Friday, 7 December 2012 05:19:06 UTC+1, gugs wrote:
>
> 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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