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

[Anne-Wil]

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, 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 
>
> ===================
>
> P.S. I tried to attach the file here but it was giving me issues...
>
> Many thanks again!
>
>

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