How can I counterbalance my experimental research design?
April 21, 2010 7:51 AM Subscribe
Can someone help me with counterbalancing an experiment that I will be conducting?
posted by bengalsfan1 to Education (4 answers total)
My experiment involves a between-subjects factor (group, 2 of them) and a within-subjects factor (facial expression @ 3 levels, happy, sad, and neutral). In other words, a 2x3 repeated measures factorial ANOVA.
I want participants to view four different people using each of these facial expressions. So, there would be a total of 12 excerpts (3 different facial expressions for each of the four people) that would be accompanied by music. Each person's facial expression (x3) would be accompanied by the same piece of music. In other words, 3 facial expressions and 1 excerpt of music for each of the four persons.
Therefore, I need to counterbalance the design in such a way that even though people are seeing different facial expressions, they are less likely to be "tipped off" that the music is the same or that they are seeing the same conductor's face (albeit different facial expression) next to one another. I think this goes beyond a Latin Square.
Any suggestions? I appreciate your thoughts.