“…Research has shown that positivity offset (as well as negativity bias) can be generalized across different kinds of stimuli (Norris, Larsen, Crawford, & Cacioppo, 2011), is temporally stable and trait-like consistent (Ito & Cacioppo, 2005), and can be used as a theoretical construct to interpret serotonergic function in healthy and clinical populations (Ashare, Norris, Wileyto, Cacioppo, & Strasser, 2013;Carver, Johnson, & Joormann, 2009;Gollan et al, 2016). During our task, positivity offset may have outweighed negativity bias because of the absence of proximal environmental danger which, in turn, promoted exploration (Ito & Cacioppo, 2005;Schettino, Loeys, Bossi, & Pourtois, 2012;Schettino, Loeys, Delplanque, & Pourtois, 2011;Schettino, Loeys, & Pourtois, 2013). Furthermore, participants were probably inclined to thoroughly examine images carrying intrinsically rewarding information also because these pictures likely matched their motivational dispositions (Byrne & Eysenck, 1993;Niedenthal, Halberstadt, & Setterlund, 1997;Niedenthal & Setterlund, 1994;Raila, Scholl, & Gruber, 2015).…”