AI, Help Me Think - but for Myself: Assisting People in Complex Decision-Making by Providing Different Kinds of Cognitive Support

How can we design AI tools that effectively support human decisionmaking by complementing and enhancing users' reasoning processes? Common recommendation-centric approaches face challenges such as inappropriate reliance or a lack of integration with users' decision-making processes. Here, we explore an alternative interaction model in which the AI outputs build upon users' own decision-making rationales. We compare this approach, which we call ExtendAI, with a recommendation-based AI. Participants in our