The SWEMWBS is a shortened version of the WEMWBS. The 7 items included were  more rigorous tested for internal consistency than the 14 item scale, having superior scaling properties. The SWEMWBS relates more to functioning than to feeling and therefore gains a slightly different perception of mental wellbeing. The main benefit of the WEMWBS is that its length and that it can be transformed to be used as an interval scale for psychometric analysis.