Please help with my paradigm

[Anthony Haywood]

Hi,

Thanks for the reply. This is the way I was hoping to do it but, being a little short on E-prime experience, I was unsure of how to implement it.

Any ideas where I could start? I have tried the manuals and online documentation but I couldn't find anything specific.

Thanks again

Tony

 > hi,
> i am not sure but i think there is a way to do it:
> You can give an attribute value for each picture: attribute named like
> "No". From 1 to 60.
> Then you can write a small code to generate a random number between
> 1 to 60. And then, you write in the code: if this number is the value of
> one of the "No" attributes of the pictures, then skip this member of
> the list.
> I think there must be a code to generate random number,
> but i am not sure for the second part; how to make the skip.
> If there is another suggestion i'd be glad to know.
>
> _
>  )
>   )
>   )
> _)   _         What I wanted to do was
> =   :*_0     a little bit psycomputing!
> =  _`\<,_
> =_(*)/_(*)__________...|o>..___..|1>...___|oo11>
>
>                                            Baris
>
> On 16 Aug 2002, Anthony Haywood wrote:
>
> > Dear all,
> >
> > As a new member of this forum, I am not entirely sure that I am posting this in the right place but, here goes...
> >
> > I am writing a paradigm to present the Mackworth clock task to a number of subjects. The paradigm itself consists of a circle of 59 grey dots and one white dot. The white dot moves around the circle, clockwise, as the second had on a clock would do, moving once per second.
> >
> > The task is designed upon 60 pictures which are shown in sequence, ie picture one is the white dot at 0, I then rotated the picture 6 degrees and saved this as picture 2 and so on.
> >
> > What I need to do is present the pictures in sequence but I want to radomly 'skip' one number so on occasion the 'second-hand' skips a notch anbd moves 12 degrees. I am unsure how to do this and any help would be greatly appreciated.
> >
> > Many thanks in anticipation.
> >
> > Anthony Haywood
> > Neurophysiologist
> >
> >
> >
>