Effect of Final block in the Indirect reciprocity task in Experiment 1 (a1,b1) and Experiment 2 (a2,b2). (a1,a2) Δ (Influence) in the Final block, computed as mean influence in the Final block minus mean influence in the previous main block of the Indirect reciprocity task, plotted across participants. Negative values (in red) represent participants who decreased the amount of advice taken from the passive agent in the Final block, while positive values (in green) represent individuals who increased their level of susceptibility towards the passive agent in the Final block. (b1,b2) Mean Δ (Influence) in the Final block in Experiment 1 and Experiment 2. Error bars represent between-subject standard error of the mean. *p < 0.05, ns: not significant. Effect of block in Mixed-effect model.