In the vast majority of the experiments that we have discussed so far, threat information was employed to enhance fear of an unknown animal for which children did not possess any prior information.
Grades can dampen existing intrinsic motivation, give rise to extrinsic motivation, enhance fear of failure, reduce interest, decrease enjoyment in class work, increase anxiety, hamper performance on follow-up tasks, stimulate avoidance of challenging tasks, and heighten competitiveness (Harter, 1978; Butler and Nisan, 1986; Butler, 1988; Crooks, 1988; Pulfrey et al., 2011).
These statistics were seen by some Poles, particularly within the right-wing press, to confirm the image of the "criminal Jew"; additionally, political crimes by Jews were more closely scrutinized, enhancing fears of a criminal Żydokomuna.
The importance of Arc in the acquisition of conditioned fear is underscored by reports that viral-mediated overexpression of cAMP response element binding protein (CREB) in BLA enhances fear learning and increases the number of Arc+ neurons in the amygdala of wild type and CREB knockout mice [18]; and that knock-down of Arc mRNA in LA interferes with auditory fear conditioning in rats [16].
Animal studies have shown that activation of the cannabinoid system during extinction learning enhances fear extinction and its retention.
The arrest of Mehdi Nemmouche on suspicion of killing three people in an attack on the Jewish Museum in Brussels will enhance the fear of repercussions as European volunteer fighters return from Syria.
In addition, they must perform procedures that can cause serious harm to their patients, thus enhancing their fear of making mistakes.
Negative perceptions related to dental treatment were considered to enhance fear and anxiety of going to the dentist; these include the sound of the drill: The sound of that drill used to drive you mad; I did run out of the dentist once.
For the development of more efficient drugs with the potential to enhance fear extinction processes, a better understanding of the underlying neurobiology is necessary.
In addition, intranasal oxytocin also dampened the central fear response by lowering amygdala activity [ 44- 46] and potentially enhancing fear regulation by increasing top-down control of the prefrontal cortex over the amygdala [ 47].
