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

History of AFNI updates  

Previous Message Next Message
Message List New Topic Print View
|
Antonio
July 31, 2008 06:33PM
Hello all,

The ABI I would like to use in my learning experiment is a measure of trial difficulty. As would be expected, participants improve with practice.

Is it ok for the ABI to correlate with trial order? In my case, the nature/strength of the correlation is not very clear, but let's just say that the correlation is strong.

I have not explicitly coded "trial order" as a regressor, but maybe the baseline coefficients are close enough. I'm using "-polort A", with 6 runs of data. AFNI does not complain during the AM2 analysis and the results look fine.

Any thoughts on where I may run into trouble?

Many thanks,

Antonio
Reply Quote
RSS
Subject Author Posted

AM correlation with trial order

Antonio July 31, 2008 06:33PM

Re: AM correlation with trial order

Gang Chen August 01, 2008 12:38PM

Re: AM correlation with trial order

Antonio August 01, 2008 03:24PM

Re: AM correlation with trial order

Gang Chen August 01, 2008 05:33PM