Table 1. Descriptive statistics of the main influencing and dependent variables.

		Robot’s behavior				Robot’s expected future role
		High skills		Lows skills		Assistant expectation		Competitor expectation		Total
		M	SD	M	SD	M	SD	M	SD	M	SD
Perceived competence	Competence (SCS)	4.03	0.66	3.38	0.80	3.78	0.82	3.63	0.78	3.71	0.80
	Task Attractiveness (IAS)	4.11	0.61	3.53	0.72	3.86	0.68	3.78	0.78	3.82	0.73
Perceived sociability	Sociability (SCS)	4.32	0.53	3.97	0.65	4.23	0.55	4.06	0.67	4.14	0.61
	Social Attractiveness (IAS)	3.24	0.91	2.89	0.93	3.21	0.91	2.93	0.95	3.07	0.94
	Perceived Sociability (ASRS)	3.67	0.82	3.17	0.89	3.58	0.79	3.27	0.96	3.03	0.96
	Perceived Enjoyment (ASRS)	4.16	0.68	3.74	0.92	4.11	0.77	3.79	0.86	3.95	0.83
Interaction evaluation	Evaluation	4.23	0.58	3.61	0.87	4.08	0.72	3.77	0.85	3.92	0.80
	Overall Rewardingness	3.95	0.73	3.32	0.89	3.73	0.83	3.54	0.89	3.63	0.87

SCS = Source Credibility Scale [43]; IAS = Interpersonal Attraction Scale [42]; ASRS = Acceptance of a Social Robot Scale [44].