The WIC Food Cost-Containment Practices Study describes the voluntarily approaches state agencies used in 2018 to reduce food costs when selecting and authorizing WIC foods. This study is the second of its kind; the first was conducted by the USDA Economic Research Service in 2003. This report examines how six types of food cost-containment practices are associated with food costs and WIC participant satisfaction, benefit redemption, and food consumption in 12 state agencies. 

The WIC Vendor Management Study: 2015 Electronic Benefits Transfer (EBT) Pilot examined compliance with program requirements and rates of violations among WIC EBT vendors in 2015 and tested a method to identify and measure errors that contribute to improper payments in an EBT environment.