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Auflistung nach Autor:in "Stellmach, Hanna"

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  • Zeitschriftenartikel
    Perception of an Uncertain Ethical Reasoning Robot
    (i-com: Vol. 18, No. 1, 2019) Stellmach, Hanna; Lindner, Felix
    This study investigates the effect of uncertainty expressed by a robot facing a moral dilemma on humans’ moral judgment and impression formation. In two experiments, participants were shown a video of a robot explaining a moral dilemma and suggesting a decision to make. The robot either expressed certainty or uncertainty about the decision it suggests. Participants rated how much blame the robot deserves for its decision, the moral wrongness of the chosen action, and their impression of the robot in terms of four scale dimensions measuring social perception. The results suggest that the subpopulation of participants unfamiliar with the moral dilemma assigns significantly more blame to the uncertain robot as compared to the certain one, while expressed uncertainty has less effect on moral wrongness judgments. The second experiment suggests that higher blame ratings are mediated by the fact that the uncertain robot was perceived as more humanlike. We discuss implications of this result for the design of social robots.
  • Konferenzbeitrag
    Perception of an Uncertain Ethical Reasoning Robot: A Pilot Study
    (Mensch und Computer 2018 - Tagungsband, 2018) Stellmach, Hanna; Lindner, Felix
    The study investigates the effect of uncertainty expressed by a robot facing a moral dilemma on humans' moral judgment and impression formation. Participants (N = 80) were shown a video of a robot explaining a moral dilemma and the decision it makes. The robot either expressed certainty or uncertainty about its decision. Participants rated how much blame the robot deserves for its action, the moral wrongness of the action, and their impression of the robot in terms of four scale dimensions measuring social perception. The results suggest that participants that were not familiar with the moral dilemma assign more blame to the robot for the same action when it expresses uncertainty, while expressed uncertainty has less effect on moral wrongness judgments. There was no significant effect of expressed uncertainty on participants' impression of the robot. We discuss implications of this result for the design of social robots.