“…For instance, it is fairly consistently reported that autistic individuals are less likely than non-autistic individuals to direct emotional expressions at others during naturalistic interactions (Snow et al, 1987; Macdonald et al, 1989; Mundy and Sigman, 1989; Yirmiya et al, 1989; Dawson et al, 1990; Kasari et al, 1990, 1993; Sigman et al, 1992; Dissanayake et al, 1996; Charman et al, 1997; Joseph and Tager-Flusberg, 1997; Bieberich and Morgan, 1998; Zwaigenbaum et al, 2005; Hobson et al, 2009; Hudenko et al, 2009). Autistic individuals also tend to mimic the facial expressions of others less frequently and consistently than non-autistic individuals (McIntosh et al, 2006; Beall et al, 2008; Stel et al, 2008; Oberman et al, 2009; but, see Magnée et al, 2007; see also Sims et al, 2012) and they share the emotional experiences of others in a qualitatively different manner than comparison groups (Yirmiya et al, 1992; Baron-Cohen and Wheelwright, 2004; Lombardo et al, 2007; Rogers et al, 2007; Dziobek et al, 2008; Hobson et al, 2009; Hurdy and Slaughter, 2009; Minio-Paluello et al, 2009a; Bird et al, 2010; Greimel et al, 2010; Schulte-Rüther et al, 2011; Schwenck et al, 2011; see also the discussion between Minio-Paluello et al, 2009b; Smith, 2009). Although findings in this context are not always consistent (see Begeer et al, 2008), the weight of the evidence overall leaves little doubt that ASD is characterized by anomalies in multiple facets of interpersonal affective behaviors, and the real life consequences of these have been documented in a series of elegant naturalistic observations by Sigman and Kasari and their colleagues (Sigman et al, 1992; Dissanayake et al, 1996; Corona et al, 1998; see also Loveland and Tunali, 1991; Bacon et al, 1998; see also Hobson et al, 2009).…”