Fig. 3
(a–d) Results of subjective ratings of pleasantness from the second study, with the upper line showing line plots over binned trials, and in the lower line, bar plots of responses taken from trials highlighted in grey. Most importantly, we see in the bar plot below (b) that the novel reward-based deepened extinction condition (reward + fear) was preferred over the conventional single fear extinction and other deepened extinction conditions. (e) Scatterplots showing the relationship between ratings differences for deepened and conventional single fear extinction cues in reinstatement, and the same ratings differences in deepened extinction. The scatterplots demonstrate a link between deepened extinction and return of fear in reinstatement, only for the two conditions (fear + fear and reward + fear) that were effective in preventing return of fear. Remarkably, this link between phases mirrors those seen in the first study looking at skin conductance responses (*p < 0.05, **p < 0.01).
