Table 2.

Overview of the meta-analysed response types

Response theme	Response	Conceptualised As
Prosociality and morality	Prosocial behaviour	Voluntary actions that are intended to help or benefit others111.
	Moral engagement	Psychological and behavioural commitment to moral standards in a given context, demonstrating direct or indirect responsiveness to the needs and interests of others112,113.
Social perceptions of interaction partners	Perceived social presence	Subjective experience of being present with a real social partner, with whom one can exchange thoughts and emotions56,153.
	Perceived likeability	Positive evaluation of the partner based on their affiliative capacity and social attractiveness115,116.
	Perceived competence	Evaluation of the partner’s intelligence and domain-specific knowledge, or their effectiveness and efficiency in task performance115,117.
	Agency attribution	Explicit, reflective process of ascribing the partner the capacity to intentionally initiate events, and recognising them as the cause of their own decisions or actions118.
	Responsibility attribution	Process of assigning responsibility, with credit or blame, for an event or action to the partner119. It is closely related to agency attribution, which lays the foundation: the partner needs to be perceived as having agency to cause an outcome before being assigned responsibility for it154,155.
Trust in interaction partners	Behavioural trust	Observable actions of voluntarily accepting vulnerability based on positive expectations of the partner, such as risk-taking behaviour or reliance on the partner under uncertainty156,157.
	Subjective trust	Psychological state comprising the intention to accept vulnerability based on positive expectations of the partner, such as their ability, benevolence, or integrity120,157.
Social alignment with interaction partners	Social alignment	Voluntary alignment of internal states and behaviours with the partner, including self-other integration (merging identities and perspectives), advice taking (incorporating partner insights), synchrony (adapting verbal and nonverbal behaviours), and proximity regulation (regulating interpersonal distances)121.
Personal agency and task performance	Perceived self-agency	Subjective experience of controlling one’s own body and external events, which leads one to feel responsible for what their decisions or actions cause158.
	Self-disclosure	Process of revealing personal information, such as one’s own thoughts, feelings, and experiences, with the partner159.
	Strategic economic behaviour	Deliberate choices of actions in economic games where one, recognising the interdependence of actions, anticipates and reacts to the partner’s actions by weighing how their choices would affect both personal and partner outcomes. It can be affected by multiple factors, including not only payoff maximisation, but also social preferences (e.g., reciprocity, trust, and fairness) or even intuitions123,160.
	Objective task performance	Measurable and quantifiable assessments regarding one’s performance of specific tasks.
Interaction experiences	Perceived partner relational qualities	Subjective evaluations of the relational attributes the partner exhibits during interaction, including perceived rapport (closeness and mutual connection), perceived interactivity (active engagement and responsiveness), perceived empathy and supportiveness (understanding of and support for one’s perspectives and feelings), and perceived customer orientation (commitment to meeting one’s needs)124.
	Affective valence	Hedonic tone (i.e., unpleasantness–pleasantness) of the emotional experience when interacting with the partner161.
	Affective arousal	Activation level (i.e., calmness–excitement) of the emotional experience when interacting with the partner161.
	Interaction satisfaction	Overall evaluation of how well the interaction with the partner meets one’s needs and expectations125.
	Future interaction intention	Degree to which one would like to interact with the partner again in the future162.
	Perceived interaction naturalness	Degree to which one perceives their interaction with the partner as natural.
	Perceived interaction enjoyment	Degree to which one feels they have enjoyed interaction with the partner.
	Subjective workload	Perception and emotional experience of the overall effort invested in performing specific tasks163.
	Subjective task engagement	Perception and emotional experience of involvement and investment in performing specific tasks164.