“…In the case of happy expressions, for example, the facial features in the mouth region were found to be particularly visually salient. Calvo and Nummenmaa concluded that there is no evidence that angry faces are more efficiently detected in a crowd than happy faces, if low-level visual confounds are controlled (see also Becker, Anderson, et al, 2011;Becker, Horstmann, & Remington, 2011;Becker et al, 2012;Coelho, Cloete, & Wallis, 2010;Horstmann, 2009;Hunt, Cooper, Hungr, & Kingstone, 2007;Mak-Fan, Thompson, & Green, 2011;Mermillod, Vermeulen, Lundqvist, & Niedenthal, 2009;Purcell & Stewart, 2010).…”