Before and after experiment using factor analysis

Posted by kimberley2314 on Apr 28, 2011; 1:23pm
URL: http://spssx-discussion.165.s1.nabble.com/Before-and-after-experiment-using-factor-analysis-tp4346460.html

Hello,

I'm doing an experiment where I'm measuring consumers attitude before and after seeing an advertisement. For the questions before and after the advertisement I'm using the same scale that measures two dimensions. However, when I'm doing an factor analysis on those 2 questions I can extract 2 factors in each question, but they don't consist of the same items...
My question is if I can compare the corresponding factors...? (the corresponding factors do measure the same dimensions but they don't consist of the same items after conducting the factor analysis)

Kind regards,
Kimberley