“…For example, studies that seek to document associations between expressions of “happiness” and self-reported experience or physiological response ignore established distinctions among different positive emotions and their accompanying expressions. As is evident in Figures 2 and 3, and in dozens of empirical studies, the positive emotions are numerous—including love, desire, awe, amusement, pride, enthusiasm, and interest, for example (Campos, Shiota, Keltner, Gonzaga, & Goetz, 2013; Shiota et al, 2017)—and there are varieties of smiles and other facial expressions that covary with these distinct positive emotions (Cordaro et al, in press; Cowen & Keltner, in press; Keltner et al, 2016; Martin, Rychlowska, Wood, & Niedenthal, 2017; Oveis, Spectre, Smith, Liu, & Keltner, 2013; Sauter, 2017; Wood et al, 2016). To give another example, the focus on sadness to the exclusion of sympathy and distress fails to capture the various emotions and blends engaged in responding to the suffering of others (Eisenberg et al, 1988; Singer & Klimecki, 2014; Stellar, Cohen, Oveis, & Keltner, 2015).…”