Valuing the Benefits of Reducing Childhood Lead Exposure—Human Capital, Parental Preferences, or Both? Ying Zhou1, Scott D Grosse2 1 Environmental Health Tracking Section, Division of Environmental Health Practice and Science, National Center for Environmental Health, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA 2 National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, GA, USA * Corresponding Author: Ying Zhou Environmental Health Tracking Section Division of Environmental Health Practice and Science National Center for Environmental Health (NCEH) Centers for Disease Control and Prevention (CDC) Atlanta, GA, USA Email:
[email protected] Disclaimer: The findings and conclusions in this paper are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention. The authors declare they have no actual or potential competing financial interests. This paper has been prepared for the Harvard Center for Risk Analysis “Risk Assessment, Economic Evaluation, and Decisions” workshop, September 26‐27, 2019. 1 Abstract Early childhood lead exposure can impair neurobehavioral development. There is a well‐documented relationship between increases in blood lead levels (BLL) and reduced IQ. Public health actions have been taken to reduce lead in drinking water including lead service line (LSL) replacement. This narrative review summarized two methods used in the literature to assign economic value to IQ—human capital approach and willingness to pay (WTP) approach. We used estimates from the literature in a case study that estimated the economic benefits of prevention of cognitive impairment caused by lead exposure in young children. In the case study, we made assumptions in the reduction in lead levels in drinking water after LSL replacement, corresponding reduction in blood lead levels, and IQ increases.