Hi, Just wanted to check and see if the following is an appropriate set-up for a repeated measures ANOVA. Thanks,

Afsana

______________________________
Afsana Afzal
Clinical Research Coordinator
Massachusetts General Hospital
Division of Neurotherapeutics
Department of Psychiatry: Neurosciences
149 13th St, Room 2612
Charlestown, MA 02129
Phone: 617-643-5129
Fax: 617-726-4078
From: freesurfer-bounces@nmr.mgh.harvard.edu [freesurfer-bounces@nmr.mgh.harvard.edu] on behalf of Afzal, Afsana [AAFZAL@mgh.harvard.edu]
Sent: Friday, February 19, 2016 10:52 AM
To: freesurfer@nmr.mgh.harvard.edu
Subject: [Freesurfer] [FreeSurfer] Repeated Measures ANOVA in FSFAST

Hi,

I'm analyzing a decision making task with a 3x3 condition matrix: pairings of low, medium, high levels of risk with low, medium, high levels of reward.

I've set up the following FSGD file to do a repeated measures/within-subject ANOVA:

GroupDescriptorFile 1
Class hc001
Class hc002
Class hc003
Class hc004
Class hc005
Variables               lRsk_lRwd   lRsk_mRwd   lRsk_hRwd   mRsk_lRwd   mRsk_mRwd   mRsk_hRwd   hRsk_lRwd   hRsk_mRwd   hRsk_hRwd
Input hc001 hc001        1           1           1           1           1           1           1           1           1
Input hc002 hc002        1           1           1           1           1           1           1           1           1
Input hc003 hc003        1           1           1           1           1           1           1           1           1
Input hc004 hc004        1           1           1           1           1           1           1           1           1
Input hc005 hc005        1           1           1           1           1           1           1           1           1

I've also created the following contrast matrices:

Con1: Does difference between highRisk and LowRisk differ from 0?
0 0 0 0 0     -1 -1 -1     0  0  0     1  1  1

Con2: Does difference between highRisk and MedRisk differ from 0?
0 0 0 0 0      0  0  0    -1 -1 -1     1  1  1

Is this an appropriate way of setting up the ANOVA?

Thanks for your help,

Afsana
______________________________
Afsana Afzal
Clinical Research Coordinator
Massachusetts General Hospital
Division of Neurotherapeutics
Department of Psychiatry: Neurosciences
149 13th St, Room 2612
Charlestown, MA 02129
Phone: 617-643-5129
Fax: 617-726-4078