Hi Doug,
I am carrying out some correlations between cortical thickness and cognitive ability, and had a question about the use of DODS vs DOSS for my analysis with Qdec. From reading some of the forums, it seems as though DOSS should be used when there are no interactions present. I am including gender as a covariate (fixed factor) and age as a nuisance variable in my model. When I run this with DODS, it shows that the correlation between thickness and cognition does not differ between males and females - does this mean that I should run the correlation using DOSS? I only seem to find significant correlations using DOSS, however I do not want to report these if the analysis is not correct.
Thanks,
Cassie
Cassandra Wannan
*PhD Candidate/Research Assistant/Psychology Tutor*
Melbourne Neuropsychiatry Centre
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0433 339 839
cwannan@student.unimelb.edu.au