... construct validity of the Warwick-Edinburgh Mental Well-being Scale (WEMWBS): a Rasch analysis using data from the Scottish Health Education Population SurveySarah Stewart-Brown*1, Alan Tennant2, ... of the scale, the total data set is randomisedinto two further sets of approximately 50% of cases. Finalresults concerning the validity of the scale should berobust over the full data set, and ... For example, in the case of measuring mental well-being, males andfemales should have the same probability of affirming anitem (in the dichotomous case), at the same level of mental well-being. ...