Matter over mind? How the acceptance of digital entities depends on their appearance, mental prowess, and the interaction between both

Digital technologies are advancing rapidly, growing to be more human-like and intelligent by the day. However, research shows that a machine's resemblance to humans can reach a critical level, which makes it seem uncanny to observers. While scholars have discussed this effect in terms of both human-like appearances and mental abilities, a potential interaction between the two aspects has hardly been addressed in literature. We designed a two-factorial experiment to overcome the identified research gap, introducing participants to digital agents with varying embodiment (text interface/human rendering) and mental capacity (simple algorithms/complex artificial intelligence). Our results show that the interaction of both factors indeed affects participants’ experience in a crucial way: Whereas an agent based on simple algorithms only evokes discomfort when embedded in a human-like body, the artificial intelligence is always perceived as eerie, regardless of its embodiment. Yet, additional findings raise doubts on the unidimensionality of participants’ affective response.