Alternating procedures of experiment by subject

[David McFarlane]

Around here we just take the simple-minded way out and make two 
program files with the two different orders, then make ourselves 
responsible for keeping track of which program to use with which 
subject.  But if you want to automate this, look into the 
Counterbalance order option of E-Studio -- run a search on this Group 
to see where I have already discussed this, look through the manuals 
that came with E-Prime, or contact PST Web Support at 
http://support.pstnet.com/e%2Dprime/support/login.asp -- this is 
pretty much their substitute for proper documentation, so make full use of it.

-- David McFarlane, Professional Faultfinder


On 1 jul, 18:04, cogneuroisfun <neuropsyc... at gmail.com> wrote:
 > I know I'm bombarding this group with questions but I'm becoming much
 > more comfortable with this program so hopefully this is my last
 > question for awhile :)
 >
 > I've searched other posts and I seem to find this exact problem. I'm
 > trying to alternate the procedures of my experiment by subject number.
 > So I have my trial list which works great finally but participants
 > will see my list of pictures twice. So I want the first time to be in
 > one order and then the second time in another order. (I'm using two
 > different neuroimaging techniques during the experiment)
 >
 > I'm hoping to have something like this:
 >
 > odd number subjects:
 >                         order 1- while in fMRI
 >                         order 2 - different imaging technique
 >
 > even number subjects:
 >                      order 2- while in fMRI
 >                      order 1-while in different imaging technique
 >
 > I'm adding a "group" in the startup info so I can differentiate
 > between whether the subject is in the fmri or other imaging
 > technique.
 >
 > I just don't know how to have to different orders of my experiment in
 > one program that changes based off subject number and group number!
 >
 > Thank you in advance!

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