TABLE A1.

Robust regression analysis on money given to an AI or a robot opponent (N = 710).

Measure	B	SE B	p	95%	CI
Age over 40	104.20	27.53	<0.001	50.14	158.25
Female	−31.26	26.57	0.240	−83.43	20.90
Occupational status
Student	Ref.	Ref.	Ref.	Ref.	Ref.
Works full or part time	−20.18	75.87	0.790	−169.14	128.78
Other	−60.77	82.85	0.463	−223.44	101.89
Household’s gross annual income
<$35,000	−62.68	29.34	0.033	−120.29	−5.07
$35,000–$154,999	Ref.	Ref.	Ref.	Ref.	Ref.
$155,000 and over	−105.69	58.06	0.069	−219.68	8.29
Technology/engineering degree	69.82	31.54	0.027	7.89	131.75
Robot exposure online	47.94	25.62	0.062	−2.37	98.25
Robot use self-efficacy	15.06	3.84	<0.001	7.52	22.60
Neuroticism [Big Five]	1.97	2.86	0.491	−3.65	7.59
Extraversion [Big Five]	1.20	2.82	0.671	−4.35	6.75
Openness [Big Five]	8.70	3.66	0.018	1.52	15.88
Agreeableness [Big Five]	1.58	3.93	0.687	−6.12	9.29
Conscientiousness [Big Five]	−13.74	4.54	0.003	−22.66	−4.82

Those not identified as males or females (n = 10) were dropped from the model for estimation reasons.