Human Aspects of IT for the Aged Population. Applications in Health, Assistance, and Entertainment 4th International Conference, ITAP 2018, Held as Part of HCI International 2018, Las Vegas, NV, USA, July 15-20, 2018, Proceedings, Part II - Zhou, Jia; Zhou, Jia; Salvendy, Gavriel; Salvendy, Gavriel (Springer International Publishing : Imprint: Springer, 2018)