My robot is happy today: how older people with mild cognitive impairments understand assistive robots' affective output. - Margherita Antona; Danai Ioannidi; Michalis Foukarakis; Justyna Gerlowska; Konrad Rejdak; Carla Abdelnour; Joan Hernández; Natalia Tantinyà; Natalia Roberto (PETRA, 2019)