Randomize trials, but always keep the last one the same

[David McFarlane]

Might also do this with judicious use of a nested List, depending on 
your requirements.  The head List runs five trials in Sequential order, 
the first four trials pull from a nested List set to Random order, and 
the fifth trial simply runs straight from the head List at the end.

-- David McFarlane


Hester Duffy wrote:
> Hi Eline,
> 
> Could you not just present the first four trials as a list which can be 
> randomised, and then the final trial as a separate stand-alone event 
> with its own procedure? That is, have a list of four trials, and then a 
> second list consisting only of the Relax trial?
> 
> H
> 
> On Wed, Dec 7, 2011 at 12:57 PM, ELine <elinebp at hotmail.com 
> <mailto:elinebp at hotmail.com>> wrote:
> 
>     Hi Eprimers
> 
>     I have a a question that I hope you might have some inputs on. I'm
>     designing an experiment which have 5 trials: read, write, listen to
>     normal speech, listen to speech in noise, and relax. I want to design
>     the experiment such that the first four trials are randomized, but the
>     last one should always be relax.
> 
>     I've tried to solve it by creating lists (10 .txt-files) with
>     different order of the tasks, but always ending with 'relax'. The idea
>     was to get a random generator to choose between the lists using the
>     inline (placed in the BlockProc before the TrialList):
>     c.SetAttrib "ListNr", "List"+CStr(random(1,10))+".txt"
>     But E-Prime does not allow the reference to attributes when defining
>     the input file to the list.
> 
>     Does any of you brilliant minds have a suggestion to how I can fix
>     this?
>     I hope to hear from you
>     ELine

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