How can I implement pseudo-random selection from a list?

Tobias tobias.fw at gmail.com
Fri Jul 22 13:40:24 UTC 2011


Yeah, I tried antering "pseudorandom" but there weren't any helpful
discussions. And no recent ones, especially.

Didn't look at the PST forum

On 22 Jul., 15:23, David McFarlane <mcfar... at msu.edu> wrote:
> Tobias,
>
> This has been discussed at length time and time again both in this
> Group and on the PST Forum (including this very week).  Did you try
> doing a search for this topic on the discussion groups?
>
> -- David McFarlane, Professional Faultfinder
>
> At 7/22/2011 09:08 AM Friday, you wrote:
>
> >Dear all,
>
> >again a rather elementary issue stroke me when I was testing a new
> >paradigm. When I have four target types, it often happens that one of
> >them is used 10 times in a row. Let's not discuss how random E-Primes
> >"random" is (I don't really trust it!). But: How can I implement a
> >pseudorandom selection from a list?
>
> >Let's say I want E-Prime to choose randomly trials from a list, but
> >one of the four target types must not be repeated more than twice in a
> >row.
>
> >I didn't find anything like that in the options, maybe some code
> >helps. Has anyone of you ever tried to do such a thing?
>
> >Looking forward to reading your answers!
>
> >Best,
> >Tobias

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