“…The importance of nonverbal communication in classroom contexts is, however, generally little appreciated, especially by inexperienced teachers (Neill et al, 1983), though it is over half a century since Waller's classic book (1932) pointed out the importance of teachers' manners, as expressed in the nonverbal signals they give, in establishing their authority to teach. Robertson (1981) is one of the few more recent authors to place equal stress on the contribution of nonverbal signals to authority.…”