Human computer interaction Masaaki Kurosu Ayako Hashizume editors ; Part 1 The four volume set LNCS 14011 14012 14013 and 14014 constitutes the refereed proceedings of the Human Computer Interaction thematic area of the 25th International Conference on Human Computer Interaction HCII 2023 which took place in Copenhagen Denmark in July 2023. A total of 1578 papers and 396 posters have been accepted for publication in the HCII 2023 proceedings from a total of 7472 submissions. The papers included in the HCI 2023 volume set were organized in topical sections as follows: Part I: Design and evaluation methods techniques and tools; interaction methods and techniques; Part II: Children computer interaction; emotions in HCI; and understanding the user experience; Part III: Human robot interaction; chatbots and voice based interaction; interacting in the metaverse; Part IV: Supporting health quality of life and everyday activities; HCI for learning culture creativity and societal impact