Problem with huge list

[Nikos Konstantinou]

If this is the script to create and randomize an array:

Dim Probe (9) As Integer

Probe(0) = 0
Probe(1) = 1
Probe(2) = 2
Probe(3) = 3
Probe(4) = 4
Probe(5) = 5
Probe(6) = 6
Probe(7) = 7
Probe(8) = 8
Probe(9) = 9

RandomizeArray Probe
how do you " set the probe digit to one of the digits from the first five,
the other half you take the 6th entry in the randomized array and make that
the probe" ?

Could you provide an example?

I appreciate your response!

Best

N




On Thu, Mar 6, 2008 at 1:48 PM, James Keidel <keidel at gmail.com> wrote:

>
> hi NIkos
>
> yes, indeed there should be an easier way to do this with an inline.
> to get you started, basically your list only needs one row I think,
> with attributes in place of values as you have in your email.
>
> you then have a script which creates an array of integers, 0-9.  you
> then call RandomizeArray and take the first 5 entries from the
> randomized version.  half the time you set the probe digit to one of
> the digits from the first five, the other half you take the 6th entry
> in the randomized array and make that the probe.  One drawback here is
> that there is no guarantee you won't have a duplicate trial in there,
> but if that is a concern you can generate all the trials before
> starting then run through them in a script to ensure there are no
> duplicates.  I think it is extremely unlikely this would happen
> though.
>
> hope this helps you get started; feel free to email me if you get stuck at
> all.
>
> best
>
> JK
>
> On Thu, Mar 6, 2008 at 1:14 PM, Nikos Konstantinou
> <nkonstantinou at gmail.com> wrote:
> > Dear E-prime group,
> >
> > I 'd appreciate any help on this issue:
> >
> > I created an experiment which has two tasks. Task 1: participants hear
> over
> > the headphones either two or six digits which they have to remember
> until
> > the end of the trial. At the end of the trial, they see a single probe
> digit
> > (visual this time) on the screen, which matches one of digits they heard
> at
> > the beggining of the trial 50% of the times.
> >
> > One way of doing it is something like this:
> >
> > Weight   Digit1    Digit2    Digit3    Digit4    Digit5    Digit6
> > ProbeDigit
> > 1           [Digit:0] [Digit:1] [Digit:2] [Digit:3] [Digit:4] [Digit:5]
> > [ProbeDigit:0]
> > 1           [Digit:0] [Digit:1] [Digit:2] [Digit:3] [Digit:4] [Digit:5]
> > [ProbeDigit:1]
> > 1           [Digit:0] [Digit:1] [Digit:2] [Digit:3] [Digit:4] [Digit:5]
> > [ProbeDigit:2]
> >  1           [Digit:0] [Digit:1] [Digit:2] [Digit:3] [Digit:4] [Digit:5]
> > [ProbeDigit:3]
> > 1           [Digit:0] [Digit:1] [Digit:2] [Digit:3] [Digit:4] [Digit:5]
> > [ProbeDigit:4]
> > 1           [Digit:0] [Digit:1] [Digit:2] [Digit:3] [Digit:4] [Digit:5]
> > [ProbeDigit:5]
> > 6           [Digit:0] [Digit:1] [Digit:2] [Digit:3] [Digit:4] [Digit:5]
> > [ProbeDigit:6]
> >
> > A problem with this solution is that it results in a huge list of rows,
> one
> > for every possible compination.
> > Although the experiment is working this way, I believe there is an
> easier
> > and "smarter" way of doing this. Maybe using and InLine?
> >
> > Anybody can help?
> >
> > Thanks in advance,
> >
> > Nikos
> >  >
> >
>
> >
>

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