“…However, only some papers compared the efficacy and utility benefits of the robots, mainly using the other robot as an alternative to the NAO or vice versa. Although children prefer NAO, they find easier to understand the gestures of a taller R3 (Kose et al, 2014) and rate Baxter robot as more positive and acceptable than NAO (Cuan et al, 2018). NAO was reportedly used along with Aibo in gesture experiments (Andry et al, 2011), iCub in eliciting behaviors on humans (Anzalone et al, 2015), Wifibot to carry the NAO (Canal et al, 2016), Pepper in human head imitation (Cazzato et al, 2019), Turtelbot in providing elderly care (DiMaria et al, 2017), Robokind R25 in interviewing humans (Henkel et al, 2019), Reeti (Johal et al, 2014) in expressing different parenting styles, R3 (Kose et al, 2014) in performing sign language gestures, Palro and Gemini (Pan et al, 2013) in evaluating interaction styles, and PR2 in identifying preferred human-robot proxemics (Rajamohan et al, 2019).…”