User experience includes the practical, experiential, affective, meaningful and valuable aspects of human–computer interaction and product ownership. Additionally, it includes a person’s perceptions of system aspects such as utility, ease of use and efficiency. User experience may be considered subjective in nature to the degree that it is about individual perception and thought with respect to the system. User experience is dynamic as it is constantly modified over time due to changing usage circumstances and changes to individual systems as well as the wider usage context in which they can be found. There are different opinions about the relation between user experience and accessibility. E.g. should user experience and accessibility be the responsibility of the same team? When should designers think about the accessibility of a design? What types of disabilities may affect peoples’ ability to use products? On the other side Affective Computing is not simply a word to measure someone’s sensation; Affective Computing can be understood as the study concerning with the understanding, recognizing and expressing human emotions by designing computational systems that makes computers to be more adaptive and interact naturally with people. The field of affective computing has attracted a lot of attention during the past years, which produced many applications which are able to exploit and adapt to multi modal input from users, e.g. stress detection from a sensor framework consisting of electrocardiogram (ECG), galvanic skin resistance (GSR), respiration (RIP) and temperature sensor. Affective computing systems were used in many research projects in the context of users who are disabled or older people. These user groups may gain a lot of benefits from affective computing systems e.g. in support of communication, management of emotional states or stress, or just improving therapy procedures etc. We invite researcher and practitioner to contribute to this STS with papers answering questions such as:

• What is the relation between user experience and accessibility?
• How to conduct user studies with disabled persons in the context of User experience and / or affective computing?
• How to involve disabled user groups in the design of such systems?
• Which groups may benefit at most from these research areas?
• How disabled users can benefit from affective computing systems? E.g. improving therapy procedures, emotional management systems, stress management, increase wellbeing etc.
• How does a computer recognize user’s emotional state?
• What is the relation between the calculation of emotional state and face, voice, gesture and other physiological measurement such as heart rate variability (HRV), skin conductivity, and muscle movement etc.?
• How reliable or universal are these measurements?
• Etc.

Chair

• 
  Mohamad Yehya, Digital Health Departmentat - Healthcare Accessibility and Interoperability (HAI), Fraunhofer Institute for Applied Information Technology (FIT)