When making choices between smaller, sooner rewards and larger, later ones, people tend to discount future outcomes. Individual differences in temporal discounting in older adults have been associated with episodic memory abilities and entorhinal cortical thickness. the cause of this association between better memory and more future-oriented choice remains unclear, however. one possibility is that people with perceptually richer recollections are more patient because they also imagine the future more vividly. Alternatively, perhaps people whose memories focus more on the meaning of events (i.e., are more "gist-based") show reduced temporal discounting, since imagining the future depends on interactions between semantic and episodic memory. We examined which categories of episodic details-perception-based or gist-based-are associated with temporal discounting in older adults. older adults whose autobiographical memories were richer in perception-based details showed reduced temporal discounting. furthermore, in an exploratory neuroanatomical analysis, both discount rates and perception-based details correlated with entorhinal cortical thickness. Retrieving autobiographical memories before choice did not affect temporal discounting, however, suggesting that activating episodic memory circuitry at the time of choice is insufficient to alter discounting in older adults. These findings elucidate the role of episodic memory in decision making, which will inform interventions to nudge intertemporal choices. Throughout our lives, we face many intertemporal choices that involve trade-offs between smaller, immediate gains and larger, long-term benefits 1. For example, an individual may have to decide whether or not it is worth paying a fee to withdraw retirement funds early. People generally tend to prefer immediate rewards to delayed ones, and they discount the value of delayed rewards to a greater extent as the delay to receiving them increases. This tendency towards temporal discounting is nearly universal, but the rate at which people discount future rewards varies widely 2,3. Steep temporal discounting, or overvaluing the present at one's long-term expense, is associated with risky behaviors such as alcohol use 4 , gambling 5 , smoking 6,7 , and excessive credit card borrowing 8. Given the substantial negative impact of steep temporal discounting, it is important to understand the neurocognitive mechanisms that underlie intertemporal choices, and to use this knowledge to develop interventions that could reduce impatience. The literature on the neural correlates of temporal discounting points to the involvement of valuation regions 9-11 , executive control regions 12-15 and episodic memory regions 16,17 in this choice process. It remains unclear, however, which of these neurocognitive systems underlies individual differences in the tendency to discount future rewards. One neurocognitive system that may support future-oriented intertemporal choices is episodic memory, or context-rich memory for autobiographical events 1...

AbstractWhen making choices between smaller, sooner rewards and larger, later ones, people tend to discount or devalue future outcomes. This propensity can be maladaptive, especially as individuals age and their decisions about health, investments, and relationships become increasingly consequential. Individual differences in temporal discounting in older adults have been associated with episodic memory abilities, as well as with cortical thickness in the entorhinal cortex. The mechanism by which better memory might lead to more future-oriented choice remains unclear, however. Here we used a fine-grained measure of autobiographical memory richness (Autobiographical Interview scoring protocol) to examine which categories of episodic details are associated with temporal discounting in cognitively normal older adults. We also examined whether recalling autobiographical memories prior to choice can alter temporal discounting in this group. Time, place, and perceptual details, but not event or emotion/thought details, were associated with temporal discounting. Furthermore, time, place, and perceptual details and temporal discount rates were associated with entorhinal cortical thickness. Retrieving autobiographical memories prior to choice did not affect temporal discounting overall, but the extent to which the memories were rich in event and time details predicted whether they would reduce discounting after they were recalled. Thus, more future-oriented decision-makers may have more contextual (i.e., time, place, and perceptual) details in their recollections overall, and retrieving central event details at the time of choice may shift decisions toward being more patient. These findings will help with the development of interventions to nudge intertemporal choices, especially in older adults with memory decline.

Older adults are frequent targets and victims of financial fraud. They may be especially susceptible to revictimization because of age-related changes in both episodic memory and social motivation. Here we examined these factors in a context where adaptive social decision-making requires intact associative memory for previous social interactions. Older adults made more maladaptive episodic memory-guided social decisions but not only because of poorer associative memory. Older adults were biased toward remembering people as being fair, while young adults were biased toward remembering people as being unfair. Holding memory constant, older adults engaged more with people that were familiar (regardless of the nature of the previous interaction), whereas young adults were prone to avoiding others that they remembered as being unfair. Finally, older adults were more influenced by facial appearances, choosing to interact with social partners that looked more generous, even though those perceptions were inconsistent with prior experience.

Objectives: Race-related stress due to institutional racism is a pervasive reality for Black college students and contributes to poor mental health outcomes such as anxious arousal symptoms. One framework which may account for this association between chronic stress and anxious arousal symptoms is the reserve capacity model. This study investigated whether racial identity dimensions (racial centrality, public regard, private regard) and sense of belonging to the racial group contribute to this population's reserve capacity and buffer the association between institutional race-related stress and anxious arousal symptoms. Method: A sample of 134 Black college students completed racial identity, sense of belonging, and mental health questionnaires. These data were subjected to multiple regression analysis to assess the main and interactive effects of institutional race-related stress and dimensions of interest as predictors of anxious arousal symptoms. Results: The analysis indicated that higher levels of institutional race-related stress, racial centrality, and public regard were each associated with higher levels of anxious arousal while higher levels of private regard and sense of belonging were associated with lower levels of anxious arousal. Further investigation of interaction effects revealed that high levels of sense of belonging and low levels of public regard, respectively, buffered the association between institutional race-related stress and anxious arousal symptoms. Conclusions: These findings illustrate how certain racial identity dimensions and sense of belonging contribute to the reserve capacity of Black students experiencing institutional race-related stress. Results are further discussed in the context of extant literature on Black racial identity and the university context. Public Significance StatementCollege can prove to be an anxiety-inducing experience for many Black students facing institutional racism on top of the typical struggles of university life. The results of this study emphasize the importance of establishing a sense of belonging with the racial group and understanding the complexities of Black racial identity in protecting the mental health of Black college students.

Older adults are frequent targets of financial fraud. They may be especially susceptible to victimization because of age-related changes in both episodic memory and social motivation. Here we examined these factors in a context where adaptive social decision-making requires intact associative memory for previous social interactions. Older adults made more maladaptive episodic memory-guided social decisions, but not only because of poorer associative memory. Older adults were biased toward remembering people as being fair, while young adults were biased toward remembering people as being unfair. Holding memory constant, older adults engaged more with people that were familiar (regardless of the nature of the previous interaction), whereas young adults were prone to avoiding others that they remembered as being unfair. Finally, older adults were more influenced by facial appearances, choosing to interact with social partners that looked more generous, even though those perceptions were inconsistent with prior experience.