Large language models (LLMs) are increasingly used for both everyday and specialized tasks. While HCI research focuses on domain-specific applications, little is known about how heavy users integrate LLMs into everyday decision-making. Through qualitative interviews with heavy LLM users (n=7) who employ these systems for both intuitive and analytical thinking tasks, our findings show that participants use LLMs for social validation, self-regulation, and interpersonal guidance, seeking to build self-confidence and optimize cognitive resources. These users viewed LLMs either as rational, consistent entities or average human decision-makers. Our findings suggest that heavy LLM users develop nuanced interaction patterns beyond simple delegation, highlighting the need to reconsider how we study LLM integration in decision-making processes.
@article{arxiv.2502.15395,
title = {Beyond Tools: Understanding How Heavy Users Integrate LLMs into Everyday Tasks and Decision-Making},
author = {Eunhye Kim and Kiroong Choe and Minju Yoo and Sadat Shams Chowdhury and Jinwook Seo},
journal= {arXiv preprint arXiv:2502.15395},
year = {2025}
}