University of Oxford
Blavatnik School of Government
Institutional Affiliation: University of Oxford
Information about this author at RePEc
NBER Working Papers and Publications
|April 2019||Can Simple Psychological Interventions Increase Preventive Health Investment?|
with , : w25731
Behavioral constraints may explain part of low demand for preventive health products. We test the effects of two light-touch psychological interventions on water chlorination and related health and economic outcomes using a randomized controlled trial among 3750 women in rural Kenya. One intervention encourages participants to visualize alternative realizations of the future; one builds participants' ability to make concrete plans. Both interventions include information on health benefits of chlorination. After twelve weeks, both interventions increase the share of households who chlorinate drinking water and reduce child diarrhea episodes. Analysis of mechanisms suggests both interventions increase self-efficacy—beliefs about one's ability to achieve desired outcomes—as well as the salien...