Gearhardt, A. N., Corbin, W. R., & Brownell, K. D. (2009). Preliminary validation of the Yale Food Addiction Scale. Appetite, 52(2), 430–436. https://doi.org/10.1016/j.appet.2008.12.003
From the validation study’s abstract: “The YFAS predicted binge-eating behavior above and beyond existing measures, demonstrating incremental validity and a sound tool for identifying patterns similar to classic addiction.”