ANOVA [(genotype—PLCβ1+/+, PLCβ1-/-) X (group—Devalue, Maintain) X (nausea—Pre-nausea, Post-nausea)] for CR found significant main effects of nausea [F(1,27) = 10,84 p = .003] and group [F(1,27) = 6.92, p = .014], and a significant nausea X group interaction [F(1,27) = 11.51, p = .002], but no effect of nor any interaction with genotype (ps > .5). This evidence concerns the gene PLCB1 and Nausea.