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Midlife decline in declarative memory consolidation is correlated with a decline in slow wave sleep 总被引:3,自引:0,他引:3
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Backhaus J Born J Hoeckesfeld R Fokuhl S Hohagen F Junghanns K 《Learning & memory (Cold Spring Harbor, N.Y.)》2007,14(5):336-341
Sleep architecture as well as memory function are strongly age dependent. Slow wave sleep (SWS), in particular, decreases dramatically with increasing age, starting already beyond the age of 30. SWS normally predominates during early nocturnal sleep and is implicated in declarative memory consolidation. However, the consequences of changes in sleep across the life span for sleep-associated memory consolidation have not been evaluated so far. Here, we compared declarative memory consolidation (for word-pair associates) during sleep in young and middle-aged healthy humans. The age groups (18–25 vs. 48–55 yr) did not differ with regard to learning performance before retention periods that covered, respectively, the first and second half of nocturnal sleep. However, after early retention sleep, where the younger subjects showed distinctly more SWS than the middle-aged (62.3 ± 3.7 min vs. 18.4 ± 7.2 min, P < 0.001), retrieval of the word pairs in the middle-aged was clearly worse than in the young (P < 0.001). In contrast, declarative memory retention did not differ between groups after late sleep, where retention was generally worse than after early sleep (P = 0.005). Retention of declarative memories was the same in both age groups when sleep periods containing equal amounts of SWS were compared, i.e., across late sleep in the young and across early sleep in the middle-aged. Our results indicate a decline in sleep-associated declarative memory consolidation that develops already during midlife and is associated with a decrease in early nocturnal SWS. 相似文献
294.
Although online dating has become an important strategy in finding a romantic partner, academic research into the antecedents of online dating is still scarce. The aim of this study was to investigate (a) the demographic predictors of online dating and (b) the validity of two opposite hypotheses that explain users' tendency to use the Internet for online dating: the social compensation and the rich-get-richer hypotheses. We presented 367 single Dutch Internet users between 18 and 60 years old with an online questionnaire. We found that online dating was unrelated to income and educational level. Respondents between 30 and 50 years old were the most active online daters. In support of the rich-get-richer hypothesis, people low in dating anxiety were more active online daters than people high in dating anxiety. 相似文献
295.
Morphological Rationalism and the Psychology of Moral Judgment 总被引:1,自引:1,他引:0
According to rationalism regarding the psychology of moral judgment, people’s moral judgments are generally the result of
a process of reasoning that relies on moral principles or rules. By contrast, intuitionist models of moral judgment hold that
people generally come to have moral judgments about particular cases on the basis of gut-level, emotion-driven intuition,
and do so without reliance on reasoning and hence without reliance on moral principles. In recent years the intuitionist model
has been forcefully defended by Jonathan Haidt. One important implication of Haidt’s model is that in giving reasons for their
moral judgments people tend to confabulate – the reasons they give in attempting to explain their moral judgments are not
really operative in producing those judgments. Moral reason-giving on Haidt’s view is generally a matter of post hoc confabulation.
Against Haidt, we argue for a version of rationalism that we call ‘morphological rationalism.’ We label our version ‘morphological’
because according to it, the information contained in moral principles is embodied in the standing structure of a typical
individual’s cognitive system, and this morphologically embodied information plays a causal role in the generation of particular
moral judgments. The manner in which the principles play this role is via ‘proceduralization’ – such principles operate automatically.
In contrast to Haidt’s intuitionism, then, our view does not imply that people’s moral reason-giving practices are matters
of confabulation. In defense of our view, we appeal to what we call the ‘nonjarring’ character of the phenomenology of making
moral judgments and of giving reasons for those judgments.
相似文献
Mark TimmonsEmail: |
296.
Previous research has demonstrated that judgmental anchoring effects—the assimilation of a numeric estimate to a previously considered standard—are semantic in nature. They result because the semantic knowledge about the target object that is activated during the comparison with the anchor influences the absolute judgment. In addition to this semantic influence, the numeric anchor value itself may also yield an effect under specific conditions. The present research was designed to examine the relative strength of both mechanisms and explore their boundary conditions. Studies 1 and 2 demonstrate that semantic anchoring effects are more potent than purely numeric effects. Study 3 further suggests that purely numeric effects only operate if accessible semantic knowledge is inapplicable to the critical judgment so that semantic influences are incapacitated. The implications of these findings are discussed from the perspective of an integrative model which differentiates between two stages of anchoring. Whereas purely numeric influences appear to be limited to the stage of anchor selection, the actual comparison with the target involves more elaborate semantic processes. 相似文献
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298.
Jennifer N. Fritz Danielle L. Dupuis Wai‐Ling Wu Ashley E. Neal Lisa A. Rettig Renée E. Lastrapes 《Journal of applied behavior analysis》2017,50(4):825-829
An evaluation of increased response effort to dispose of items was conducted to improve recycling at a university. Signs prompting individuals to recycle and notifying them of the location of trash and recycling receptacles were posted in each phase. During the intervention, trashcans were removed from the classrooms, and one large trashcan was available in the hallway next to the recycling receptacles. Results showed that correct recycling increased, and trash left in classrooms increased initially during the second intervention phase before returning to baseline levels. 相似文献
299.
Noncontingent reinforcement without extinction plus differential reinforcement of alternative behavior during treatment of problem behavior
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Jennifer N. Fritz Lynsey M. Jackson Nicole A. Stiefler Barbara S. Wimberly Amy R. Richardson 《Journal of applied behavior analysis》2017,50(3):590-599
The effects of noncontingent reinforcement (NCR) without extinction during treatment of problem behavior maintained by social positive reinforcement were evaluated for five individuals diagnosed with autism spectrum disorder. A continuous NCR schedule was gradually thinned to a fixed‐time 5‐min schedule. If problem behavior increased during NCR schedule thinning, a continuous NCR schedule was reinstated and NCR schedule thinning was repeated with differential reinforcement of alternative behavior (DRA) included. Results showed an immediate decrease in all participants’ problem behavior during continuous NCR, and problem behavior maintained at low levels during NCR schedule thinning for three participants. Problem behavior increased and maintained at higher rates during NCR schedule thinning for two other participants; however, the addition of DRA to the intervention resulted in decreased problem behavior and increased mands. 相似文献
300.
Allhoff F 《The American journal of bioethics : AJOB》2004,4(4):31-3; discussion W35-7