This case study analysed the expert judgments of a rehabilitation counsellor. The counsellor was given 37 accident victims' self-ratings of health, energy, daily activities, self-esteem, personal relations, financial resources and living conditions. The accident victims also rated their own overall quality of life as poor or good. The expert was required to make judgments about whether the quality of life was poor or good in each case and matched the ratings of the accident victims in 64.8% of cases. The results suggest that under conditions of uncertainty and complexity an expert may be more accurate than chance but still fail to use the properties of information to their maximum advantage.
