Emotional future thinking serves important functions related to goal pursuit and emotion regulation but has been scantly studied in posttraumatic stress di

Temporal discounting (TD) represents the mental devaluation of rewards that are available after a delay. Whether the hippocampus is critical for TD remains unclear, with marked discrepancies between animal and human studies: although animals with discrete hippocampal lesions display impaired TD, human participants with similar lesions show intact performance on classic intertemporal choice tasks. A candidate explanation for this discrepancy is that delays and rewards are experienced in the moment in animal studies but tend to be hypothetical in human studies. We tested this hypothesis by examining the performance of amnesic participants with hippocampal lesions (one female, six males) on a novel experiential intertemporal choice task that used interesting photographs occluded by thick lines as rewards (Patt et al., 2021). Using a logistic function to model indifference points data, we compared performance to that on a classic intertemporal choice task with hypothetical outcomes. Participants with hippocampal lesions displayed impaired patterns of choices in the experiential task but not in the hypothetical task. Specifically, hippocampal lesions were associated with decreased amplitude of the delay-reward trade-off, with persistent choice of the delayed option despite delay increase. These results help explain previous discrepancies across animal and human studies, indicating that the hippocampus plays a critical role in temporal discounting when the outcomes of decisions are experienced in the moment, but not necessarily when they are hypothetical.SIGNIFICANCE STATEMENTImpaired temporal discounting (TD) has been related to maladaptive behaviors, including substance dependence and nonadherence to medical treatment. There is consensus that TD recruits the brain valuation network but whether the hippocampal memory system is additionally recruited remains unclear. This study examined TD in hippocampal amnesia, providing a unique opportunity to explore the role of the hippocampus in cognition. Whereas most human studies have used hypothetical outcomes, this study used a novel experiential task with real-time delays and rewards. Results demonstrated hippocampal involvement in the experiential task, but not in a classic hypothetical task administered for comparison. These findings elucidate previous discrepancies between animal and human TD studies. This reconciliation is critical as animals serve as models of human neurocognition.

Students and educators sometimes hold beliefs about intelligence and learning that lack scientific support, often called neuromyths. Neuromyths can be problematic, so it is important to find methods to correct them. Previous findings demonstrate that textual refutations are effective for correcting neuromyths. However, even after correction, erroneous information may continue to influence reasoning. In three experiments, we investigated whether feedback could be used to update students’ and educators’ beliefs and influence their reasoning about neuromyths. Across all experiments, the results showed that both students and educators held erroneous beliefs about learning and memory that could be updated after receiving feedback. Feedback also increased students’, but not teachers’, reasoning accuracy. The results demonstrate that feedback can be used to update beliefs in neuromyths, but these beliefs may influence reasoning even after correction.

Research suggests that how people feel about aging can contribute to their later physical, cognitive, and mental health. In two studies, we examined younger (ages 18-30) and older adults' (ages 61-70) views about aging by asking them to rate the extent to which they would find it desirable to be various ages between 0 and 120. Participants also indicated both their ideal age (the age at which they would most like to be) and their subjective age (how old they generally feel). Consistent with the previous studies, younger adults' ideal age was significantly younger than older adults' ideal age. Younger adults' subjective age was slightly older than their chronological age, whereas older adults' subjective age was slightly younger than their chronological age. Of interest was the finding that, for older adults, their desirability ratings of various ages gradually decreased after age 35. In contrast, younger adults' desirability ratings decreased precipitously after age 20 and remained low from age 45 through age 90. Results suggest that older adults view middle to later life in a more nuanced manner than younger adults, who viewed middle and later life as being undesirable and homogenous.

By its nature, scientific understanding is subject to change, as methods to study a phenomenon become more refined. How can scientific findings be conveyed to the general public when segments of the public may hold on to beliefs unsupported by science? We examined this problem by considering how individuals correct health misconceptions in response to differently phrased explanations of scientific knowledge. The results from two experiments showed that while explanations containing more tentative phrases characteristic of scientific communication (e.g., evidence suggests ) were effective, those containing more assertive phrases (e.g., this is proven ) were the most effective for updating lay knowledge. Furthermore, relative to the more tentative phrasing, the more assertive phrasing was judged as more convincing and conveying higher confidence. These findings demonstrate the need to determine more effective methods of communicating and conveying confidence in scientific findings.