Replication Data for: Chatbot or Humanaut? How the Source of Advice Impacts Prosocial Behavior

This paper explores how the source of advice – human or generative AI (genAI) – relates to behavior in three classic bargaining games commonly used to assess prosociality and cooperative welfare gains. Utilizing a novel experiment, we show that the source of advice matters. Players preferred human advice over that from genAI and were more willing to pay for it. Prosocial behavior was more prevalent when players received human advice, with augmented cooperation in stag hunts and higher contributions in public goods and dictator games. Leveraging language AI advances, we demonstrate that the advice corpora differ significantly. Humans were objective, specific, intuitive, and norm-oriented; genAI offered guided reason- ing and targeted concepts of risk and strategy. Entities adopting genAI technolo- gies should balance AI agency with human oversight to improve accountability.