“…Concomitant use of smiles, head nods, and eyebrow raises occurs in approval-seeking, greeting, and supportive contexts. Such cues are used together to regulate conversational turn-taking, and co-occur cross-culturally (Birdwhistell, 1970;Dittmann & Llewellyn, 1968;Eibl-Eibesfeldt, 1972;Rosenfeld, 1966Rosenfeld, , 1972Knapp, Hart, Friedrich, & Schulman, 1973). Given that these cues occur singly and in combination during all phases of an interaction, and that they function as rewards, it is likely that smiles, head nods, and eyebrow raises affect the level of interpersonal attraction between interactants.…”