How to avoid presenting targets consecutively

[David McFarlane]

Tobias,

At 7/22/2011 10:06 AM Friday, you wrote:
>Unfortunately there is no command "draw new trials"
>
>That would be my way to go. Any hints?

The closest such commands would be List.GetNextAttrib and 
List.PeekAttrib (see those topics in the E-Basic Help facility).  But 
I don't think those will solve your problem, at least they did not 
provide a solution for me when I had to do some particulary fussy 
randomization with constraints (aka conditional randomisation).

(And before you ask, we worked around it first by simply discarding 
trials during analysis that failed to meet the randomization 
criteria, and later by doing the "make one suitable random order and 
use that for everyone" trick.  It's trying to do all this 
"on-the-fly" that gets us tied into knots.)

-- David McFarlane, Professional Faultfinder.

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