Figure 3. Reliability and Consistency of the ATT Procedures.

(A) The strongest predictor of the amount of alcohol consumed in the post-scan ATT was the amount consumed in the pre-scan ATT, [All: F(1,94)=238.4, p<0.0001, R² =0.72; BD F(1,26)= 121.5, p<0.0001, R² =0.62;SD F(1,24)=28.51, p<0.0001, R² =0.53, so pre-scan ATT was included as a co-variate in all analyses. (B) Participant consumption of alcoholic and placebo beer was highly correlated, providing further evidence that participants were unable to distinguish the two,[All: F(1,92)= 95.1, p<0.0001, R² =0.51, BD: F(1,25)=62.26, p<0.001, R²=0.74; SD: F(1,22)=38.72, p<0.0001, R² =0.64.]. (C) The amount of alcohol consumed in the ATTs was strongly related to the participants’ regular self-reported monthly alcohol consumption for all participants, [All: F(1,50)= 10.84, p=0.002, R² =0.22; BD: F(1,25)= 5.557, p=0.03, R² =0.18; SD: F(1,23)=4.348, p=0.048, R² =0.6.]