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

[David McFarlane]

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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