Variables	Items	Study	References
Social-oriented	The chatbot is easy to talk with	1, 2, and 3	Williams and Spiro (1985); Van Dolen et al. (2007)
	The chatbot genuinely liked to help me
	The chatbot seemed interested in me not only as a customer, but also as a human or a person
	The chatbot liked to talk and put me at ease
Task-oriented	The chatbot worked hard to provide information	1, 2, and 3	Williams and Spiro (1985); Van Dolen et al. (2007)
	The chatbot primarily focused on the details pertaining to the shoes
	The chatbot mainly provided she information
	The chatbot wanted to make sure I made a decision about the shoes
Warmth perception	The chatbot is warm	1, 2, and 3	Cuddy et al. (2008)
	The chatbot is kind
	The chatbot is friendly
	The chatbot is sincere
Competence perception	The chatbot is competent	1, 2, and 3	Cuddy et al. (2008)
	The chatbot is intelligent
	The chatbot is capable
	The chatbot is skillful
Customer satisfaction	I am satisfied with the chatbot’s provided handling service	1, 2, and 3	Evans et al. (2000)
	I am satisfied with this chatbot as a service assistant
	Based on my experience, I am satisfied with this service
Attachment anxiety	I worry that romantic partners will not care about me as much as I care about them	2 and 3	Wang et al. (2017)
	My desire to be very close sometimes scares people away
	I do not often worry about being abandoned (R)
	I find that my partner(s) do not want to get as close as I would like
	I get frustrated if romantic partners are not available when I need them
	I need a lot of reassurance that I am loved by my partner
Attachment avoidance	I want to get close to my partner, but I keep pulling back	2 and 3	Wang et al. (2017)
	I am nervous when partners get too close to me
	I try to avoid getting too close to my partner
	I usually discuss my problems and concerns with my partner (R)
	It helps to turn to my romantic partner in times of need (R)
	I turn to my partner for many things, including comfort and reassurance (R)