“…A substantial body of research has established that people unconsciously mimic their interaction partners' postures, gestures, and mannerisms (Lakin et al, 2003), and language use patterns (Niederhoffer & Pennebaker, 2002), and that such mimicry is related to subsequent affiliative behavior. Among a large number of similar findings, people spontaneously mimic an experimental confederate's gestures and report greater liking for a confederate who mimics them (Chartrand & Bargh, 1999), and leave larger tips for a waitress who mimics them (van Baaren et al, 2003). Researchers using the automated Linguistic Inquiry and Word Count algorithm (Pennebaker et al, 2001(Pennebaker et al, , 2007 have found that similarity in relative usage frequency of common function word (Taylor & Thomas, 2008), task group cohesiveness (Gonzales et al, 2010), and the formation and persistence of romantic relationships (Ireland et al, 2011).…”