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Hey, thanks for the quick answer. Do you have any idea what an F-contrast of [1] or t-test of [1] respectively would test in this case? greetings 2014-08-04 14:27 GMT+02:00 Kotikalapudi Raviteja < [log in to unmask]>: > Dear David, > > It looks perfect and you might also want to add t constrast of -1 1 just > to know what happens for an opposite constrast. > Regards, > Ravi > > Sent from my Windows Phone > ------------------------------ > From: David Hofmann > Sent: 4/8/14 05:53 PM > To: [log in to unmask] > Subject: [SPM] 2nd level contrasts > > Hi @all, > > I attached a picture of my design-matrix for 2nd level analysis. I want to > compare the two groups with a two sample t-test (first group > second > group) In order to do this I specified the t-contrast:[ 1 -1 ]. Is this > correct? Because I'm a little confused about what e.g. the t-contrast or > F-contrast [1] or just [-1] would test. > > greetings > > David >