> I get the following error message:
The test index should be added:
-num_glt 1 \
-gltLabel 1 LinearTrend -gltCode 1 'condition: ' \
> how does setting up the 1 0 -1 in 3dLME differ from the approach of
> using the -gltcode contrast method? Where, 1 0 -1, is essentially a
> pairwise comparison between the 1st and 3rd level?
In the LME model, the linear trend is tested for the *quantitative* variable as a whole in which the middle condition is set as an intercept. In contrast, the contrast test through 3dMVM only focuses on the first and last condition with the middle condition ignored. You may try both and check out the difference between the two approaches.
Gang
Edited 2 time(s). Last edit at 11/29/2016 01:24PM by Gang.