Existing research on human-AI collaborative decision-making focuses mainly on the interaction between AI and individual decision-makers. There is a limited understanding of how AI may perform in group decision-making. This paper presents a wizard-of-oz study in which two participants and an AI form a committee to rank three English essays. One novelty of our study is that we adopt a speculative design by endowing AI equal power to humans in group decision-making.We enable the AI to discuss and vote equally with other human members. We find that although the voice of AI is considered valuable, AI still plays a secondary role in the group because it cannot fully follow the dynamics of the discussion and make progressive contributions. Moreover, the divergent opinions of our participants regarding an "equal AI" shed light on the possible future of human-AI relations.

翻译：现有的人机协同决策研究主要关注人工智能与个体决策者之间的互动，对于人工智能如何在群体决策中发挥作用的认识十分有限。本文通过一项"巫师之杖"研究，让两名参与者与一个AI组成委员会，对三篇英语作文进行排序。本研究的一个创新之处在于，我们采用推测性设计，赋予AI与人类在群体决策中平等的权力——允许AI与其他人类成员平等地讨论和投票。研究发现：尽管AI的意见被认为具有价值，但由于其无法完全跟上讨论的进程并做出渐进性贡献，AI在群体中仍处于次要地位。此外，参与者对"平等AI"所持的不同观点，为人类与AI关系的未来可能性提供了启示。