Back to History

Fields Changed

Registration

Field Before After
Study Withdrawn No
Intervention Completion Date March 31, 2019
Data Collection Complete Yes
Final Sample Size: Number of Clusters (Unit of Randomization) 3818
Was attrition correlated with treatment status? No
Final Sample Size: Total Number of Observations 3818
Final Sample Size (or Number of Clusters) by Treatment Arms 811 control, 754 x messages, 794 y messages, 817 x and y messages, 642 y incentives
Public Data URL http://doi.org/10.3886/E181963V1
Is there a restricted access data set available on request? No
Program Files Yes
Program Files URL http://doi.org/10.3886/E181963V1
Data Collection Completion Date April 30, 2019
Is data available for public use? Yes
Back to top

Papers

Field Before After
Paper Abstract Impact evaluations of behavioral interventions typically focus on target outcomes. Might interventions induce negative spillovers on other behaviors? I run a large field experiment in which individuals receive combinations of messages and incentives promoting two healthy behaviors, meditation and meal logging. I find that the interventions reduce completion rates of the opposite behavior by 19-29%. I find that interventions with larger target effects do not necessarily generate larger negative spillovers, and demonstrate implications for cost-effectiveness analysis. I investigate the mechanisms behind the observed spillovers.
Paper Citation “Does Promoting One Healthy Behavior Detract from Others? Evidence from a Field Experiment” Forthcoming, American Economic Journal: Applied Economics.
Paper URL https://www.aeaweb.org/articles?id=10.1257/app.20210788&&from=f
Back to top