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461.
Susanne Koessler Harald Engler Carsten Riether Johanna Kissler 《Psychological science》2009,20(11):1356-1363
ABSTRACT— Stress affects memory, yet no study has investigated the effects of stress on memory inhibition: Remembering not only facilitates later recall, but also inhibits retrieval of related material, a phenomenon known as retrieval-induced forgetting. We investigated the effects of stress on this mechanism, which is thought to adaptively guide memory selection. Participants learned categorized lists and were then exposed to either a psychosocial laboratory stressor or a cognitively challenging control treatment. They then actively retrieved parts of the previously learned material. Finally, memory for all initially learned items was tested. In the stress group, unlike in the control group, intervening retrieval practice did not impair final recall. Moreover, salivary cortisol levels increased and psychological well-being decreased in the stress group only. Thus, psychosocial stress abolishes retrieval-induced forgetting. This effect may result from stress-induced hormone release from the hypothalamic-pituitary-adrenal (HPA) axis and may have implications for educational, legal, and clinical issues. 相似文献
462.
Norman R. Brown Peter J. Lee Mirna Krslak Frederick G. Conrad Tia G.B. Hansen Jelena Havelka John R. Reddon 《Psychological science》2009,20(4):399-405
ABSTRACT— Memories of war, terrorism, and natural disaster play a critical role in the construction of group identity and the persistence of group conflict. Here, we argue that personal memory and knowledge of the collective past become entwined only when public events have a direct, forceful, and prolonged impact on a population. Support for this position comes from a cross-national study in which participants thought aloud as they dated mundane autobiographical events. We found that Bosnians often mentioned their civil war and that Izmit Turks made frequent reference to the 1999 earthquake in their country. In contrast, public events were rarely mentioned by Serbs, Montenegrins, Ankara Turks, Canadians, Danes, or Israelis. Surprisingly, historical references were absent from (post–September 11) protocols collected in New York City and elsewhere in the United States. Taken together, these findings indicate that it is personal significance, not historical importance, that determines whether public events play a role in organizing autobiographical memory. 相似文献
463.
Labeling and the effects of labeling have been extensively researched in the psychological literature in a variety of different contexts. For example, labeling has been empirically shown to lead to lowered expectancies of behavior and achievement, which can then contribute to the potential for the occurrence of a self-fulfilling prophecy with adverse consequences. Another area that has been extensively researched, with a dramatic increase in the literature base in recent history, is that of child sexual abuse (CSA). Despite various shortcomings of the research literature, the consistent findings have been identification of a variety of negative correlates and symptomatologies associated with CSA. In addition to any direct, negative effects of CSA, there may also be an additional impact from the “label” itself. Although the literature pertaining to CSA and labeling runs deep independently, efforts at addressing the issue of CSA within a labeling contextual framework have been minimal. To that end, this article examines hypothesized mechanisms of how the “sexual abuse” label may potentially have an adverse influence on the children subjected to such a label. The implications of an analysis, which addresses childhood sexual abuse from such a theoretical framework, may be a broader and more holistic understanding of the complexities and sequelae associated with CSA. 相似文献
464.
Carsten Köllmann 《Erkenntnis》2003,58(1):47-70
The article deals with problems of incommensurability and meaning change in thecontext of scientific dynamics. Its main topic is a proposal made by Putnam basedon his version of the principle of charity. It is shown that this proposal does not workas a general principle for the understanding of theory change, for it leads in some cases to an unconvincing interpretation of now discarded theories and is even uncharitable. So it could be polemically described as a kind of defamation ('üle Nachrede') of these theories. This will be demonstrated in two case studies. The first one sketches the development of economic value theory, while the second deals with the development of the concept of probability. 相似文献
465.
Carsten Ljunggren 《Studies in Philosophy and Education》2003,22(5):351-370
In the article texts by John Dewey, JürgenHabermas and Richard Rorty are discussed in thelight of different meanings of the Public. Thisis done by discussing foundational andnon-foundational claims on a philosophy ofpragmatism and democracy, and by looking atdifferent meanings of intersubjectivity. Onecrucial difference I am pointing at, is thatwhile Dewey's intersubjectivity is stemmingfrom philosophical arguments as well aspolitical, Habermas's intersubjectivity isrestricted to the level of (an almostscientific) philosophical abstractargumentation without any concrete language ofpolitics. When it comes to Rorty I stress thathe is far closer than Habermas to Dewey'spragmatism, especially his ambition to includethe specific individuals and to stressindividuality in a philosophy of communicationand public conduct. 相似文献
466.
467.
A meta-analysis of 25 years of mood-creativity research: hedonic tone, activation, or regulatory focus? 总被引:2,自引:0,他引:2
This meta-analysis synthesized 102 effect sizes reflecting the relation between specific moods and creativity. Effect sizes overall revealed that positive moods produce more creativity than mood-neutral controls (r= .15), but no significant differences between negative moods and mood-neutral controls (r= -.03) or between positive and negative moods (r= .04) were observed. Creativity is enhanced most by positive mood states that are activating and associated with an approach motivation and promotion focus (e.g., happiness), rather than those that are deactivating and associated with an avoidance motivation and prevention focus (e.g., relaxed). Negative, deactivating moods with an approach motivation and a promotion focus (e.g., sadness) were not associated with creativity, but negative, activating moods with an avoidance motivation and a prevention focus (fear, anxiety) were associated with lower creativity, especially when assessed as cognitive flexibility. With a few exceptions, these results generalized across experimental and correlational designs, populations (students vs. general adult population), and facet of creativity (e.g., fluency, flexibility, originality, eureka/insight). The authors discuss theoretical implications and highlight avenues for future research on specific moods, creativity, and their relationships. 相似文献
468.
469.
Since its discovery in the 1960s, anisomycin has been used for studying the impact of protein synthesis for manifold cerebral processes such as long-term plastic changes after learning. The common limitation of nearly all pharmacological experiments, including anisomycin treatment, is to precisely verify the affected brain regions. Here we illustrate anisomycin effects on protein synthesis in distinct brain regions of mice (C57BL/6JOlaHsd), revealing differences between three modes of anisomycin application (subcutaneous, s.c.; intraperitoneal, i.p.; local microinfusions into the hippocampus). Our method is based on inhibition of the incorporation of the radioactively-labelled amino acids [(35)S]-Methionine/Cysteine into newly synthesised proteins. Washing the brain slices before autoradiography removes pools of amino acids, which have not been incorporated into newly synthesised proteins, thus, illustrating pure protein synthesis. By comparing different routes of systemic anisomycin application (i.p. versus s.c.; 150 mg/kg) it became evident that the effect of i.p. injection of anisomycin is fully reversed after 6 h, whereas s.c. injection is inhibiting protein synthesis in the hippocampus even 9 h after application. Local microinfusions of anisomycin into the hippocampus were shown to have long-lasting effects as well, which reversed as late as 9 h after injection. The diffusion of anisomycin was maximal at 3 h after injection and more precisely confined to the intended area using a lower dose (20 microg/site) instead of the commonly used dose of 62.5 microg/site. The broad time window of anisomycin action, as revealed in our study, has to be considered, if it comes to the interpretation of time course studies within the context of protein synthesis-dependent processes. 相似文献
470.
This study examined the associations between older adults' daily physical symptoms (e.g., chest pain or difficulty breathing) and 2-year changes in chronic health problems (e.g., cardiovascular disease or cancer) and in functional problems (e.g., difficulty dressing or moving around at home). We reasoned that these associations depend on a person's active control processes aimed at counteracting physical health problems (i.e., health-engagement control strategies, or HECS). In particular, we hypothesized that high levels of HECS buffer the adverse effect of daily physical symptoms on increases in chronic and functional health problems. We found that daily physical symptoms were associated with declines in chronic and functional health among older adults who were not engaged in addressing their health problems, but not among their counterparts who reported high levels of HECS. These findings suggest that active control strategies play an important role in the maintenance of older adults' physical health. 相似文献