“…It is widely accepted there is the existence of negativity bias in human beings [ 4 , 5 , 6 , 7 ], referring to the greater sensitivity to negative stimuli compared with positive stimuli [ 4 , 8 ], and to the higher predisposition to consider ambiguous emotional stimuli as negative than positive [ 9 ]. The origin of this bias has been addressed from multiple perspectives (see Kanouse [ 10 ] for a review) and it is still an open question, however, its existence has been evidenced in both verbal and non-verbal stimuli [ 1 , 11 ]; in affective judgments [ 9 ], social information processing [ 12 ], during the child development [ 6 ], and on consumer behavior [ 13 ]; also when using event-related potentials [ 14 ], and peripherical physiological measures [ 15 , 16 ]. However, this generalizability was recently challenged.…”