Does power influence moral thinking? Well, that depends on whether you are mulling over an ethical decision from a position of power.
In determining whether an act is right or wrong, the powerful focus on whether rules and principles are violated, whereas the powerless focus on the consequences. For this reason, the powerful are also more inclined to stick to the rules, irrespective of whether this has positive or negative effects, whereas the powerless are more inclined to make exceptions.
“Thinking about power,” the authors of the study, Lammers and Stapel said, “increases rule-based thinking and decreases outcome-based thinking in participants’ moral decision making. Rule-based thinking is attractive to the powerful because stability is in their interest and, therefore, cognitively appealing.” That is, we like a rule until it doesn't benefit us.