Ralf Vetter worked at the Center for Human-Computer Interaction in October 2020 until March 2021 as a Junior Researcher in support of the KITKA project. He holds a Bachelor in Psychology from the University of Vienna, which he finished with an HCI-related thesis about the effects of a chatbot in an online pharmacy on trust, the feeling of social presence and purchase intention. Since October 2020 Ralf is also enrolled in the Joint Master Degree Programme Human-Computer Interaction from the University of Salzburg and the Salzburg University of Applied Sciences. He is interested in HCI theory and methodology.