It's also interesting that the children perceive the robot to be more human-like than machine-line, yet still they abuse it. Perhaps it is the simplicity of its behavior that makes is so easily abusable. If the robot were able to interact in a more complex way, perhaps like a child or an adult, asking questions or talking about other topics rather than having a single-minded goal of moving from A to B, the children would be slower to adopt abusive behavior.