“…As people tend to like similar others (Byrne, ), similarity also influences mimicry. People, for instance, mimic more when others share their opinion (Bourgeois & Hess, ; Van Swol & Drury, ), and when others are from their own group rather than from another group (e.g., Yabar, Johnston, Miles, & Peace, ; Van der Schalk et al, ). Mimicry of happiness, however, is not affected by group membership (Bourgeois & Hess, ; Van der Schalk et al, ).…”