Chairperson på følgende fire præstationer: 1) Do patients asses themselves differently to clinicians? An investigation of levels of agreement between raters using the Lysholm Knee Score. 2) Analysis of the Stress-Energy Questionnaire using modern test theory - a comparison with classic test theory - Part 1. 3) Analysis of the Stress-Energy Questionnaire using modern test theory - a comparison with classic test theory - Part II. 4) The Rasch Cutoff Point for Diagnosis Usage of the Taiwanese Depression Scale