Persons vs years: two ways of eliciting implicit weights.

The paper presents two methods for eliciting individuals' implicit weights to be attached to health benefits which extend over time. The first is a person-trade-off type which implies that social weights are attached to years with improved health when these are distributed between different groups of people. The second method is based on time-trade-off which yields private weights to succeeding years with improved health for oneself. Emphasis is placed on methodological issues, but some preliminary results obtained from small samples are also presented.