“…It is indeed well reported that fear of compassion for self correlates strongly with fear of compassion to others (e.g., Gilbert et al., 2011 ). In order to clarify whether the lack of effects on altruistic behavior were due to the inadequacy of the Redistribution Game to detect the desired effect, replications would be needed i) adopting more than a single task, ii) testing prosocial behavior in more than one occasion, and iii) including behaviors that are less “artificial”, such as for example the intention or attitude toward donating ( Bo O'Connor et al., 2022 ). It is also possible that the absence of behavioral effects is due to the limited duration of the stimulation protocol (i.e., a single 15-min tDCS session).…”