C O - CREATING REQUIREMENTS AND ASSESSING END - USER ACCEPTABILITY OF A VOICE - BASED CHATBOT TO SUPPORT MENTAL HEALTH :A THEMATIC ANALYSIS OF A LIVING LAB WORKSHOP PREPRINT Antonio Benítez-Guijarro, Raymond Bond, Frederick Booth, Zoraida Callejas, Edel Ennis, Anna Esposito, Matthias Kraus, Gavin McConvey, Michael McTear, Maurice Mulvenna, Courtney Potts, Louisa Pragst, Robin Turkington, Nicolas Wagner, Huiru Zheng A. Benítez-Guijarro, Z. Callejas: University of Granada, Granada (Spain) {ajbenitez,zoraida}@ugr.es R. Bond, F. Booth, E. Ennis, M. McTear, M. Mulvenna, C. Potts, R. Turkington, H. Zheng: Ulster University, Shore Road, Newtownabbey (Northern Ireland) {rb.bond, Booth-F, e.ennis, mf.mctear, md.mulvenna}@ulster.ac.uk {c.pottsturkington-R, h.zheng}@ulster.ac.uk A. Esposito Università degli Studi della Campania Luigi Vanvitelli, Caserta (Italy) iiass.annaesp@tin.it M. Kraus, L. Pragst, N. Wagner: University of Ulm, Ulm (Germany) {matthias.kraus, louisa.pragst, nicolas.wagner}@uni-ulm.de G. McConvey: Action Mental Health, Newtownards (Northern Ireland) gmcconvey@amh.org.uk This is a preprint of the paper: Benítez-Guijarro A. et al. (2021) Co-creating Requirements and Assessing End-User Acceptability of a Voice-Based Chatbot to Support Mental Health: A Thematic Analysis of a Living Lab Workshop. In: D’Haro L.F., Callejas Z., Nakamura S. (eds) Conversational Dialogue Systems for the Next Decade. Lecture Notes in Electrical Engineering, vol 704. Springer, Singapore. https://doi.org/10.1007/978-981-15-8395-7_15 This preprint follows Springer Self-archiving policy for non-open access books and chapters (https://www.springer. com/gp/open-access/publication-policies/self-archiving-policy): “authors may deposit a portion of the pre-submission version of their manuscript (preprint) in a recognised preprint server (...). This portion of the pre-submission manuscript (preprint) may be deposited and made publicly available at any point.”