Is it appropriate to add up scale scores on the EMI-2 to get a total motivation score?
No! The way I see it, the EMI-2 is designed to tap the direction of motivation rather than the intensity, although there’s obviously some element of ‘intensity of direction’ as it were! Sorry, that’s a bit cryptic – I mean that it taps the extent to which a respondent is motivated to exercise for various distinct reasons rather than just how motivated to exercise they are. A total score would be pretty meaningless, in my view.
