changing CorrectAnswer

[David McFarlane]

Eli,

With all that said, how about if we think outside the frame of your 
question as posed and see how to do this with no code at all?  Here's how:

In your TrialList, add two columns called CorrectLeft and 
CorrectRight.  Fill these in with the correct assignments for left & 
right.  Now, in the Correct property of your Stim1 object, enter the 
following exactly:
[Correct[Handedness]]

Note the use of nested brackets.  Now on each trial, using the inner 
brackets Stim1 will construct an attribute reference from 
Correct[Handedness], either Correctleft or Correctright (note that 
E-Prime ignores case here).  Then it will use that value in the outer 
brackets to get the correct value from the desired column.

Isn't that slick?  I tested this and it really does work for me.  Who 
would have thought that E-Prime allows nested attribute references 
using the bracket notation?  Nice feature, now that we know, so 
thanks for the question!

-- David McFarlane, Professional Faultfinder


>Eli,
>
>If you want to manipulate the correct response by changing .CRESP in
>code, then you have to do that *before* your input mask runs, not
>after.  Once an input mask gets a response it scores that response
>using the latest value of .CRESP, so changing .CRESP after the fact
>does no good.
>
>So, either change .CRESP before your input mask runs, or, as liw
>suggested, use code after the response to score the response directly,
>i.e., make your change directly to .ACC (based directly on, e.g.,
>handedness and .RESP) instead of to .CRESP.
>
>-- David McFarlane, Professional Faultfinder
>
>
>On Mar 18, 7:38 am, Eli Koren <ekor... at gmail.com> wrote:
> > Hi There!
> >
> > I want to change the CorrectAnswer if handedness is left
> > so i wrote this script:
> >
> > if c.GetAttrib("handedness") <>"left" then
> > if stim1.Cresp ="{/}" then
> > stim1.Cresp ="x"
> > elseif stim1.Cresp ="{.}" then
> > stim1.Cresp ="z"
> > end if
> > end if
> >
> > It doesn't change the CorrectAnswer so what's wrong with this
> > script?
> >
> > Thanks
> > ELi Koren

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com.
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com.
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en.