Enhancing User-centered Design with Large Language Models

User-centered design (UCD) is a foundational approach in software development that prioritizes users' needs, behaviors, and expectations throughout the design process. For instance, Design Sprints effectively integrate UCD into fastpaced software development, enabling teams to fail fast, learn quickly, and refine solutions based on real user feedback. This paper explores the potential of Large Language Models (LLMs) as an integrated component of UCD methodologies, specifically within the Design Sprint framework. Our goal is to analyze how LLMs can assist designers throughout different phases of the Design Sprint, improving efficiency and aiding in developing user-centered solutions. To achieve this goal, we conducted a study with Computer Science, Software Engineering, and Design students during a course on innovative software product engineering. The study was structured into three phases: (i) theoretical instruction, (ii) practical application of the design sprint methodology with LLM integration, and (iii) presentation and discussion of the developed products. We conducted focus groups to gather insights on the participants' experiences using an LLM as a support tool for Design Sprint activities. Our results provide insights into how LLM can be leveraged to assist in rapid product design while preserving UCD principles.