A new study reveals that how your brain reacts to food purchasing decisions can be used to determine your political affiliation with almost 80% accuracy.

Researchers from Iowa State University, the University of Kansas Medical Center, Oklahoma State University, and the University of Exeter in England used brain imaging techniques to examine adults purchasing eggs and milk with various prices and produced in different ways.

Interestingly, the purchases did not significantly differ by the adults’ political party. What differed by political affiliation, were the areas of the brain that were active during the purchases. The study is published in the journal Politics and the Life Sciences.