• Nonverbal cues are the dominant channel for attitude inference and interpersonal evaluation in dyads, with eye-contact, posture, distance, and mutual gaze shaping perceived affiliation and attraction; demonstrated across multi-channel nonverbal studies and detailed behavior coding. [6], [7], [1], [19], [12], [3], [10]

• Proxemics and spatial layout function as central social signals; measured proximity predicts self-disclosure and attitudinal judgments across contexts, including cross-cultural proxemics and distance manipulation. [15], [1], [16], [7], [10]

• Self-disclosure and intimacy drive liking and relationship depth; reciprocity amplifies intimacy levels, with intimacy scales and distance-based manipulations producing systematic effects on social bonding. [20], [5], [16], [19], [13]

• Impression formation and self-presentation are framed by verbal and nonverbal signals; classic works map how individuals curate information and interpret others' signals via nonverbal repertoires and content-free communication. [4], [12], [17]