Socioeconomic hardship and delayed reward discounting: Associations with working memory and emotional reactivity.
Decision-making
Delayed reward discounting
Early life stress
Emotional reactivity
Poverty
Socioeconomic hardship
Working memory
Journal
Developmental cognitive neuroscience
ISSN: 1878-9307
Titre abrégé: Dev Cogn Neurosci
Pays: Netherlands
ID NLM: 101541838
Informations de publication
Date de publication:
06 2019
06 2019
Historique:
received:
25
09
2018
revised:
02
04
2019
accepted:
02
04
2019
pubmed:
21
4
2019
medline:
23
11
2019
entrez:
21
4
2019
Statut:
ppublish
Résumé
Prolonged exposure to socioeconomic hardship (SH) is associated with greater delayed reward discounting (DRD), a form of impulsive decision-making that reflects a reduced capacity to delay gratification and a significant correlate of diverse risk behaviors, but the neurobehavioral mechanisms linking SH and DRD are unknown. An emerging hypothesis suggests that cognitive and affective stress associated with poverty may tax neurocognitive functions, such as working memory (WM), and lead to impulsive DRD. Furthermore, research suggests that emotional reactivity (ER) is an important dispositional factor to consider in the link between executive functions and DRD. Thus, we longitudinally examined the indirect effect of SH on impulsive DRD via a network of brain regions associated with WM function in a sample of young adults, and whether that link was moderated by ER. Participants were 119 rural African Americans (aged 19-24 years) assessed behaviorally on four occasions, with fMRI at the last time point. Results showed that, among emerging adults with higher ER, SH severity was predictive of increased DRD via reduced response in brain regions activated during an n-back WM task. These findings reveal both the cognitive and affective mechanisms that underlie the relationship between SH and DRD.
Identifiants
pubmed: 31004982
pii: S1878-9293(18)30244-5
doi: 10.1016/j.dcn.2019.100642
pmc: PMC6546101
mid: NIHMS1028626
pii:
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
100642Subventions
Organisme : NIDA NIH HHS
ID : K01 DA045219
Pays : United States
Organisme : NIDA NIH HHS
ID : R01 DA029488
Pays : United States
Organisme : NIDA NIH HHS
ID : P30 DA027827
Pays : United States
Informations de copyright
Copyright © 2019 The Authors. Published by Elsevier Ltd.. All rights reserved.
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