I am currently doing research on social media and how it can effect depression, anxiety and stress scale (DASS) scores. I have two age groups (18-25, 26-35) and also took scores on narcissistic personality inventory (NPI). I'm struggling to know what statistical test to do. I was thinking MANOVA with age as my independent variable and time spent on social networks, NPI scores and DASS scores as my three dependent variables. Is this correct?
My research question is: Does social network use affect DASS scores and NPI scores in two age groups?