Experimental paradigm and procedure
anxiety
A modified dictator game (see also Ref.(All participants underwent two blocks, a pre-stimulation (baseline) block, and a post-stimulation block, with 27 trials (3 intention conditions × 9 offer levels) in each block. The pre-stimulation block was presented without any tDCS stimulation. The post-stimulation block followed immediately after a 20-min tDCS stimulation (anodal, cathodal, or sham). Subjective ratings on anxiety