Comparison of health state valuation methods to establish which of the available valuation/scaling methods would be the best to use in the next major study. To establish which descriptive system should be used. To partially replicate Rosser's earlier work. Variables Health state valuation; methodology; individual differences; socio-medical indices Measurement Scales Health locus of control scale from Wallston, Wallston and de Villus, <i>Health locus of control</i> 1987 Eysenck personality questionnaire from Eysenck and Eysenck, <i>Eysenck personality questionnaire</i> 1975 Euroqol questionnaire Pairwise comparison exercise Magnitude estimation exercise Time trade-off exercise Category rating exercise