Two – step Experiment Design for Participative Design Thinking

User-centric development of innovative products, functions, or services can be challenging. Usually, users understand the purpose or functionality of the system they use and are therefore in a competent decision-making position when asked to rate the usability of a product or voice suggestions for improvement. However, some products are unfamiliar to the users for whom these products are developed. To test these types of products efficiently, we developed an experiment design composed of well-studied methods like Usability Testing and Design Thinking workshops. The goal is to generate improvements and development tasks collaboratively with the end users. Furthermore, we present experiences of applying this approach in a study with 22 participants on an innovative safety-relevant ADAS function in collaboration with an Original Equipment Manufacturer (OEM).