positive emotion, even when excessive and problematic, is less likely to increase as a function of recent life stress, whereas convergent data from animal models49, 50 and humans51, 52 suggests that stress can increase behavioral disinhibition and impulsive responding. Thus, perhaps the high VS-low amygdala phenotype we identify more directly shapes the risk pathway characterized by high impulsivity and behavioral disinhibition, rather than the risk pathway associated with the enhancement of positive emotion.
