The expert committee’s role is to consolidate all the versions of the questionnaire and develop what would be considered the prefinal version of the questionnaire for field testing. The committee will therefore review all thetranslations and reach a consensus on any discrepancy.The material at the disposal of the committee includesthe original questionnaire, and each translation (T1, T2,T12, BT1, BT2) together with corresponding written reports (which explain the rationale of each decision atearlier stages).The expert committee is making critical decisions so,again, full written documentation should be made of theissues and the rationale for coming to a decisionabout them.Decisions will need to be made by this committee toachieve equivalence between the source and target version in four areas11: