Sorry Jeanette, my stupid further ask..... where is the cope estimate?
Hi,The group t-stat map will be a test of that effect and corresponds to a 1-sided test. The actual mean is not the t-stat, but the cope estimate.Cheers,Jeanette
On Mon, Feb 4, 2013 at 8:38 AM, Tseng Mark <[log in to unmask]> wrote:Hi Jeanette,Ah....this is actually a continuous question of my previous post "2x2x2 repeated measures ANOVA model."Just like we discussed, presumably at the first level the order of the 8 EVs is:
A1B1C1The 3-way interaction in my first-level model would be:
A1B1C2
A1B2C1
A1B2C2
A2B1C1
A2B1C2
A2B2C1
A2B2C2
ABC =[1 -1 -1 1 -1 1 1 -1]
I just want to know the group mean of this 3-way interaction.By setting up a group mean 1s model in my higher level analysis, should I just check the t (zstat) map which is exactly the group mean of this 3-way interaction?Thanks in advance.Mark2013/2/4 Jeanette Mumford <[log in to unmask]>
Hi,The tricky thing with an f-contrast is that there isn't a single mean as you are testing a group of contrasts simultaneously in a "are any of these significant?" test. In FSL you cannot bring lower level f-contrasts to the higher level, but will work with single contrasts instead.Hope that helps,JeanetteOn Mon, Feb 4, 2013 at 8:18 AM, Mark <[log in to unmask]> wrote:
Hi,
Sorry this might be a simple question but I just don't know how.....
In my first-level feat model, I have a F contrast as well as many t contrast. I want to see the group mean of the F contrast. However, when I set up a group mean contrast using 1s in the higher-level model, I can only see the group average of t contrasts.
How can I see group mean of F contrast?
Thanks.
Mark