Published Online: May 3, 2013. doi:10.1001/jamapediatrics.2013.82
Study concept and design: Hanks, Just, and Wansink.
Acquisition of data: Hanks and Just.
Analysis and interpretation of data: Hanks, Just, and Wansink.
Drafting of the manuscript: Hanks, Just, and Wansink.
Critical revision of the manuscript for important intellectual content: Hanks, Just, and Wansink.
Statistical analysis: Hanks and Just.
Obtained funding: Just and Wansink.
Administrative, technical, and material support: Wansink.
Study supervision: Just and Wansink.
Conflict of Interest Disclosures: None reported.
Funding/Support: We thank the US Department of Agriculture (USDA) for their generous support of this research through the grant that established the Cornell Center for Behavioral Economics in Child Nutrition Programs, USDA/Economic Research Service grant 59-5000-0-0090.
Role of the Sponsors: The USDA had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.
Additional Contributions: We thank Adam Brumberg, BS, and Kathryn Hoy, RD, for coordinating the project with the participating schools and collecting tray waste data. We recognize Nutri Kids for its support in extracting sales information. We also are grateful for assistance from Laura Smith and Julia Hastings-Black.