Feedback at the end of the block

Tue Nov 19 15:09:58 UTC 2013

David,

I am really sorry for the type errors, I really should have copied the 
code. But the problem really had something to do with how E-Prime computes 
responses at run time, as you suggest at the end of your message. Turns out 
I had a no go trial, and accuracy computation was not ready when the inline 
needing it was executed, so no go trials for which subject correctly did 
not respond were computed as errors while running the program. I used an 
inline with the code 

          Do While TempoResposta.InputMasks.IsPending()
          Loop

And  that seems to be working fine now!
Thank you very much for your help!

Best,
Fernanda

Em segunda-feira, 18 de novembro de 2013 20h12min40s UTC, McFarlane, David 
escreveu:
>
> Fernanda, 
>
> Your puzzle interests me, but I cannot get to the puzzle itself 
> because of problems in your code excerpts.... 
>
>
> 0) You did not say so, but I presume that you defined your Summation 
> objects as global variables in the global User Script area, thus, 
>
>      Dim CorrectTimes as Summation 
>      Dim AverageAccuracy as Summation 
>
> Did you do that? 
>
>
> 1) At one place your code uses "CorrecTimes", and at another 
> "CorrectTimes".  Those are two different variable names, you have to 
> pick one or the other (I presume you meant "CorrectTimes" for both). 
>
>
> 2) Your code for after ResponseObject includes the line 
>
>      AverageAccuracy.AddObservation TempoResposta.ACC 
>
> but you have not used TempoResposta anywhere else.  I suppose you 
> mean AverageAccuracy.ACC here, but you should clarify that. 
>
> While I am at it, I would change the code for CorrectTimes to merely 
>
>      If (ResponseObject.ACC = "1") Then CorrectTimes.AddObservation 
> ResponseObject.RT 
>
> or even further to just 
>
>      If ResponseObject.ACC Then CorrectTimes.AddObservation 
> ResponseObject.RT 
>
>
> 3) Your code at the end of the block contains two syntax 
> errors.  First, you have not closed off the quotes around the 0.00 at 
> the end of your first line.  Second, CDbl() takes only one argument, 
> but on the second line you have placed the parentheses around two 
> arguments.  For that matter, you should not need the CDbl() and 
> CString() conversions at all, the following should work just as well: 
>
>      c.SetAttrib "BlockRT", Format( CorrectTimes.Mean, "0.00" ) 
>      c.SetAttrib "BlockACC", Format( (AverageAccuracy.Mean * 100), "0.00" 
> ) 
>
>
> I discovered all this merely by pasting your own code into E-Studio 
> and attempting to compile, at which time I got compile-time 
> errors.  When posting code to the Group, best to copy code excerpts 
> directly from your E-Studio files rather than retyping into a 
> message.  I had to give up any further exploration after running into 
> all these errors because I do not know if any of those might cause 
> your problem. 
>
> With that said, I will add one more thing that may affect your 
> feedback calculation.  You must make sure that the code after 
> ResponseObject does *not* execute until after ResponseObject gets a 
> response!  You may do that in several ways: 
>      - Run another stimulus object between your ResponseObject and 
> the inline code. 
>      - Set Duration of ResponseObject to "(infinite)" (and of course 
> End Action to "Terminate"). 
>      - Set PreRelease of ResponseObject to 0. 
> Otherwise, if your inline code runs during the presentation of 
> ResponseObject but before it gets a response (very easy to do with 
> PreRelease and a finite Duration), then the feedback calcuations will 
> be wrong.  This has become a particular problem as users with habits 
> learned in older versions of E-Prime move up to EP2.0.10 (I know, I 
> got bit by this myself just last week!). 
>
> ----- 
> David McFarlane 
> E-Prime training 
> online:  http://psychology.msu.edu/Workshops_Courses/eprime.aspx 
> Twitter:  @EPrimeMaster (https://twitter.com/EPrimeMaster ) 
>
> /---- 
> Stock reminder:  1) I do not work for PST.  2) PST's trained staff 
> take any and all questions at https://support.pstnet.com , 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. 
> \---- 
>
>
> At 11/15/2013 03:52 PM Friday, Fernanda Sais wrote: 
> >Hi, 
> > 
> >I am trying to set a feedback to be displayed at the end of each 
> >block. It works very well for the mean reaction time with different 
> >methods, but for the average accuracy I always have the same problem 
> >- the average accuracy displayed is far lower than expected for the 
> >number of errors commited: it should display something like 90-99% 
> >but it displays something like 60-79%, so I guess there is something 
> >I'm missing about it. The accuracy information is computed correctly 
> >into the data file, it is incorrect only in the feedback display. 
> > 
> >The code I'm using now is: 
> > 
> >'At Block Setup: 
> > 
> >Set CorrecTimes = New Summation 
> >Set AverageAccuracy = New Summation 
> > 
> >'After ResponseObject: 
> > 
> >If ResponseObject.ACC = "1" Then 
> >CorrectTimes.AddObservation c.GetAttrib("ResponseObject.RT") 
> >End If 
> > 
> >AverageAccuracy.AddObservation TempoResposta.ACC 
> > 
> >'At the End of the Block: 
> > 
> >c.SetAttrib"BlockRT", Format(CStr(CDbl(CorrectTimes.Mean)),"0.00) 
> >c.SetAttrib"BlockACC", Format(CStr(CDbl(AverageAccuracy.Mean*100,"0.00") 
> > 
> >Then there is Text Display like that: 
> > 
> >Your results for this block: 
> >Mean Reaction Time: 
> >[BlockRT]ms 
> >Average Accuracy: 
> >[BlockACC]% Correct Responses 
> > 
> >Thanks a lot for any comment on that - I'm really running out of ideas. 
> > 
> >Best wishes, 
> > 
> >Fernanda 
>
>

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