Ml. Cropper et al., PREFERENCES FOR LIFE SAVING PROGRAMS - HOW THE PUBLIC DISCOUNTS TIME AND AGE, Journal of risk and uncertainty, 8(3), 1994, pp. 243-265
In surveys of 3,000 households, we have found that people attach less
importance to saving lives in the future than to saving lives today, a
nd less importance to saving older persons than to saving younger pers
ons. For the median respondent, saving six people in 25 years is equiv
alent to saving one person today, while for a horizon of 100 years, 45
persons must be saved for every person saved today. The age of those
saved also matters; however, respondents do not weight lives saved by
number of life-years remaining: For the median respondent, saving one
20-year-old is equivalent to saving seven 60-year-olds.