Schematic representation of an event during the fMRI experiment.

<p>At the start of the event, participants were presented with their four groups, one of their groups or their four traits for five seconds and during this time had to think about the words presented on the screen. After two seconds, participants received either painful (toothpick) or non-painful (Q-tip) stimulation. After six seconds, participants had three seconds to rate how painful the stimulation was. At the end of the event, a fixation dot appeared on the screen for 1 second.