Part I: Essentials of designing interactive systems 1.    Designing interactive systems: A fusion of skills 2.    PACT: A framework for designing interactive systems  3.    The process of human-centred interactive systems design 4.    Usability 5.    Experience design 6.    The Home Information Centre (HIC): A case study in designing interactive systems Part II: Techniques for designing interactive systems 7.    Understanding 8.    Envisionment 9.    Design 10.   Evaluation 11.   Task analysis 12.   Visual user interface design 13.   Multimodal user interface design Part III: Contexts for designing interactive systems 14.   Designing websites 15.   Social media 16.   Collaborative environments 17.   Agents and avatars 18.   Ubiquitous computing 19.   Mobile computing 20.   Wearable computing Part IV: Foundations of designing interactive systems 21.   Memory and attention 22.   Affect 23.   Cognition and action 24.   Social interaction 25.   Perception and navigation