“…For example, we could not assess gender as a moderator because most studies used gender-matching, which would obfuscate potential gender differences in a meta-analytic framework (e.g., using the percent female of the sample as a predictor). Given that females in the general population are more empathic (Derntl et al, 2010;Schulte-Rüther et al, 2008), and females with schizophrenia have better social functioning (Andia et al, 1995;McGlashan and Bardenstein, 1990;Usall et al, 2002), gender could be an important variable to study in relation to affective empathy in schizophrenia. We also could not assess the importance of testing environment -though some studies administered tasks while conducting fMRI scans (Benedetti et al, 2009;Derntl et al, 2012a;Lee et al, 2010), this group was too small to conduct categorical moderator analyses (Fu et al, 2011), preventing examination of the effects of a potentially stressful scanning environment on performance.…”