In human-human interaction, the likability of the social interaction partner can be judged within seconds and this judgment has been found to be a strong predictor for interaction with a robot (Clark and Rutter, 1985;Robbins and DeNisi, 1994).
besides trust likability of the robot acting as a social interaction partner (Bartneck et al., 2008) seemed to be worthwhile considering in our study as a dependent variable.