Humans make decisions jointly with others. They share responsibility for the outcome with their interaction partners. Today, more and more often the partner in a decision is not another human but, instead, a machine. Here we ask whether the type of the partner, machine or human, affects our responsibility, our perception of the choice and the choice itself. As a workhorse we use a modified dictator game with two joint decision makers: either two humans or one human and one machine. We find a no treatment effect on perceived responsibility or guilt. We also find only a small and insignificant effect on actual choices.
"For the future, an open discussion of hybrid-decision situations would be desirable. It might not only be important to address the technical question of what we can achieve by using artificial decision making systems such as computer but also how humans perceive them in different situations and how this influences human decision-making."