There is also a published article about the study that can be accessed.
This research examined the effects of a double dollar fruit and vegetable financial incentive on purchases at a community supermarket among shoppers from low-income households who had at least one child. Participation in an in-store Cooking Matters event was requested for those who received incentive but optional for their non-incentivized controls. The sample included Supplemental Nutrition Assistance Program participants. Compared to the controls, incentivized shoppers—who were given an immediate 50 percent discount on qualifying fruit and vegetables—increased weekly spending on those items by 27 percent overall; this change was for fresh produce. There was no change in purchases of frozen and canned produce or unhealthful foods. Estimated annual average daily consumption of fruit and vegetables by the incentivized shoppers and by one designated child per incentivized household did not change. Attendance at Cooking Matters events was low. These findings support continued funding for financial incentive programs as a way to increase fruit and vegetable purchasing among low-income households with children but suggest that effective complementary approaches are needed to improve total diet quality.