Induction of Empathy by the Smell of Anxiety
Figure 2
In the beginning of each trial, participants were requested to exhale (a ball decreased in diameter for 3 s) and then to inhale (a ball increased in diameter for 3 s). After a variable interval (range = 2.6–8.5 s) a question mark appeared on the screen and the participants were asked to indicate whether they perceived an odor or not. By pressing one of the two response buttons the questions mark disappeared. If no response was given within 2.75 s, an exclamation mark appeared for 0.5 s. The trial duration was 22.75 s.
