“…This phenomenon, known in the literature as entrainment, alignment, coordination, adaptation, unconscious mimicry, or 'the Chameleon Effect' (below we will use the term 'entrainment' exclusively), occurs along many acoustic, prosodic, syntactic and lexical dimensions -as well as in social behavior such as turn-taking -in both human-human interactions [15,25,64,77,54,78,18] and human-computer interactions [16,72,5]. Evidence of entrainment has been demonstrated in vowel spectra [1]; fundamental frequency [2]; pronunciation [40,59]; intensity [53]; voice quality [67]; lexical and syntactic choice [14,64]; frequency and duration of pauses [45]; speaking rate [39,5]; response latency ( [21]); utterance length [50]; turntaking behavior [47], jokes and laughter [63]. It has been found in many cultures: Hungarian [46], Frisian and Dutch [36,81],…”