I am using a 2X3X4 design, which has the following ivs: Social Anxiety Scores(formed two groups,essentially high and low scores) 3 emotions and 4 gaze directions. I need to test if the groups are essentially different(before I do my mixed anova). I thought I could do this through an independent t-test. As I have tried to do one, it has tested the differences between each condition individually. How can I test them for difference, is it a matter of how I present the data in the data viewer? Or is the another method to do it?