I thought I posted this earlier but I can't see it so apologies if it appears twice.
I am trying to figure out how to do a within-subject analysis when the data is split over two datasets. I have pre- and post- measures, with an ID code for each person. I have figured out how to merge by cases (which allows me to do a straight comparison of all pre- vs all post scores. I have merged by variables, using ID Code as the key variable, but the Post- data still appears as new cases below the pre- data (although the variables are added). If that's all that is meant to happen, is there a way of carrying out analysis such that I can calculate the difference in scores for each individual?
Thanks.
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Carly Butler
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#SPSSStatistics