AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

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bb2958
October 04, 2019 03:25PM
I'm sorry I don't quite understand, actually. I am not familiar with this notation for t-tests: does (A1B1-A2B1)-(A1B2-A2B2), for example, mean I do the subtraction of A1B1-A2B1 and the subtraction A1B2-A2B2 for each subject and the run a paired sample t-test between the resultant maps? Or do I need to run ttests instead of subtractions? I'm unsure how it could be the latter, since that would only leave me with two maps for the final ttest.

I should note that all factors and levels are within subject. Every subject did all factors and all levels.

Final Q: in which of these ttests should I run multiple compairson correcting permutation tests? Running on all of them seems wrong, but so does running it on jus the final ttest.

Thanks for your help!



Edited 3 time(s). Last edit at 10/04/2019 03:53PM by bb2958.
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Subject Author Posted

2x2 anova with multiple comparisons correction

bb2958 October 01, 2019 02:59PM

Re: 2x2 anova with multiple comparisons correction

gang October 01, 2019 04:23PM

Re: 2x2 anova with multiple comparisons correction

bb2958 October 01, 2019 04:53PM

Re: 2x2 anova with multiple comparisons correction

gang October 01, 2019 05:30PM

Re: 2x2 anova with multiple comparisons correction

bb2958 October 02, 2019 01:50PM

Re: 2x2 anova with multiple comparisons correction

bb2958 October 04, 2019 03:25PM

Re: 2x2 anova with multiple comparisons correction

gang October 04, 2019 04:42PM