Mauchly's sphericity test

Posted by la_kennedy on Mar 23, 2011; 12:41am
URL: http://spssx-discussion.165.s1.nabble.com/Mauchly-s-sphericity-test-tp4258003.html

Hey,
I am running analysis to find how the manipulation of mood affects sporting performance. I have done pre and post mood manipulation tests on 2 sets of participants (positive and control), from this I get 6 lots of data (performance scores, positive mood scores, negative mood scores both pre and post).
I used a repeated measures anova on spss but the sig section in the Mauchly's sphericity test table is empty.
What am I doing wrong?
Any advice would be appreciated.
Thank you.
with regards,
la_kennedy