My research is to evaluate change of emotional responses of participants, after performing two types of game activities. Two groups of participants, Group A and Group B, will be assigned to Activity A and Activity B respectively. The research design does not cater for a control group.
I plan to measure the baseline emotions (using the Mood Questionnaire)  of all the participants. The arousal and valence components will be measured using the Self Assessment Manikin (SAM) questionnaire 
So now, I have pre-test responses from Mood Questionnaire (baseline emotional responses), and the post-test responses from SAM.
I am not sure how to proceed with the data from each instrument. For instance, how do I obtain a change in emotional responses from each subject? How do we normalize the baseline emotions in this case?
Mood Questionnaire available at  https://www.metheval.uni-jena.de/mdbf.php
SAM questionnaire available at  http://irtel.uni-mannheim.de/pxlab/demos/index_SAM.html