Explore a conference talk that delves into the concept of experimental preregistration in Human-Computer Interaction (HCI) research. Learn about the importance of preregistering experimental intentions to prevent HARKing (Hypothesising After the Results are Known) and enhance the credibility of research findings. Discover how this practice, common in many scientific disciplines, can be adapted to the unique characteristics of HCI empirical research. Examine the motivations behind preregistration, its outcomes across various fields, and previous discussions on evaluation methods in HCI. Gain insights into how implementing preregistration could potentially improve the quality and reliability of HCI studies. This 22-minute presentation, delivered at the ACM CHI Conference on Human Factors in Computing Systems in Montréal, offers valuable perspectives for researchers, reviewers, and anyone interested in advancing the rigor of HCI experimentation.