“…Several personal service robots have been developed, including Aibo (Fujita, 2001), Care-O-bot (Graf, Han, & Schraft 2004;Graf, Reiser, Hägele, Mauz, & Klein, 2012), Pearl (Pollack et al, 2002), iCat (van Breemen, Yan, & Meerbeek, 2005), Robocare (Cesta et al, 2007), Robot-Era robots (Cavallo et al, 2014), or Hobbit (Fischinger et al, 2016). In addition, the robots Huggable (Stiehl et al, 2006), Paro (Wada, Shibata, Musha, & Kimure, 2005), Companionable (Badii et al, 2009), Giraff (Coradeschi, Loutfi, Kristoffersson, Von Rump, Cesta, Cortellessa, 2011) and GiraffPlus (2014), amongst others, have been developed to provide emotional support and other companion functions. Under this context, some studies have considered the optimal companionship that robots could provide (Taggart, Turkle, & Kidd, 2005;Wada, Shibata, Saito, & Tanie, 2003).…”