Bundled payment programs will not be as effective as they could be in motivating behavior change unless they take into account lessons from behavioral economics, report Jeroen Struijs, a 2013–14 Dutch Harkness Fellow in Health Care Policy and Practice and senior researcher at Netherlands’ National Institute of Public Health and the Environment, and colleagues. Their blog post, based on research undertaken with Commonwealth Fund support, was published in Health Affairs (April 25, 2018).