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. 2011 Apr 11;6(4):e18686. doi: 10.1371/journal.pone.0018686

Figure 1. Behavioural paradigms.

Figure 1

Faces (or words) of different emotional valence are embedded within a premask and a postmask followed by a confidence rating (low, medium, high) and a forced choice test (target, none, distracter). To ensure that participants do not respond automatically (i.e. without attending to the stimuli), the duration of the fixation cross varies, and a blank screen was added between the postmask and the confidence rating with varying duration.