Mario Callegaro is Senior Staff User Experience Researcher in Google Cloud UX, London.He is the research lead for Gemini Cloud Assist.He focuses on User eXperience research and consults on numerous projects in terms of UX research methods, reporting, communication of results and stakeholders management.Mario holds a M.S. and a Ph.D. in Survey Research and Methodology from the University of Nebraska, Lincoln. Prior to joining Google, Mario was working as survey research scientist for Knowledge Networks a company who built Knowledge Panel, a probability based panel of the U.S. population. (now Ipsos Knowledge Panel).Current research areas: Artificial Intelligence and Large Language Models from a user POV, user experience research methods, web survey design, online panels, and questionnaire design in which he has published numerous papers, book chapters and conference presentations. Mario published an edited book (May 2014): Online Panel Research: A Data Quality Perspective (Wiley publisher) and his monograph titled: "Web Survey Methodology" is available from Sage as of June 2015 and from 2021 available as open access