What is the term for judging based on a simulation of the same parameters on oneself
In naïve realism, the subject acknowledges others' points of view while affirming the superiority of his/her own. Ross and Ward (1996) review the literature. I tried to write a summary of their fine paper, but I couldn't do it justice. I provide a link to it below.

In selfishness or unenlightened self-interest, the subject may consider multiple points of view, but ultimately chooses by myopically predicting maximal net personal gain.

In philosophy, moral relativism is concerned with (inter-personal or inter-group) differences in moral judgements, and whether and how they can be reconciled. My point here is that your subjects' moral relativistic beliefs may impact their decision mechanisms and thus may be worth surveying.

References


  
  Ross, L., &amp; Ward, A. (1996) Naive realism in everyday life: Implications for social conflict and misunderstanding. In T. Brown, E. S. Reed &amp; E. Turiel (Eds.), Values and knowledge (pp. 103–135). Hillsdale, NJ: Erlbaum. [pdf]