Back to PLS HelpPosted on 04/30/13 01:44:56
Number of posts: 16
Hi,
Is it possible to do a behavioural PLS with data that has two groups and a single condition? I would like to see if some behavioural measure collected outside the scanner (e.g. a measure of IQ) correlates with different reqions in my two groups for an experimental task performed in the scanner. So my behaviural data would be a single column organised like this:
group1 condition1 subject1
group1 condition1 subject2
...
group2 condition1 subject1
group2 condition1 subject2
If so, would these results be interpretable? Or would I need to include a control condition in there as well, to make sure that the regions that correlate with IQ during my experimental task fail to correlate with IQ during, for example, a fixation condition.
I hope this is clear!
Cheers,
Reece
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Posted on 05/07/13 08:55:16
Number of posts: 229
Hi Reece..
yes, you can do this -
with respect to interpretation - that is harder to answer, not knowing the experiment. With one experimental condition and one behavioural measure, you will be able to determine whether the brain-behav correlations are similar or different between the groups. You'll need to decide if the additional contrast with a control condition is needed to best interpret the results.
nancy
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