Feedback at the end of the block

[Fernanda Sais]

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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