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171.
Schneider DW 《Psychonomic bulletin & review》2007,14(5):970-976
Exploring the hierarchical control relationship between different levels of representation and processing is important for
understanding how the mind controls itself. In the present study, the relationship between chunking (a sequence-level process)
and task-set inhibition (a task-level process) in the performance of task sequences was investigated to evaluate the hypothesis
that within-chunk facilitation reduces then−2 repetition cost (slower performance forn−2 task repetitions than forn−2 task switches) attributed to task-set inhibition. An experiment is reported in which subjects were induced to chunk sequences
such thatn−2 repetitions occurred within or between chunks. Direct evidence of chunking was obtained, andn−2 repetition cost was smaller whenn−2 repetitions occurred within chunks than between chunks. These findings are consistent with an elaborated hypothesis that
attributes the reduction inn−2 repetition cost to priming of task goals rather than direct modulation of task-set inhibition. 相似文献
172.
173.
Stephan de la Rosa Michael Gordon Bruce A. Schneider 《Attention, perception & psychophysics》2009,71(3):451-462
Research has shown that the visual system’s sensitivity to variations in luminance (visual contrast) within a particular area of the retina is affected in a bottom-up fashion by the ambient contrast levels in nearby regions. Specifically, changes in the ambient contrast in areas surrounding the target area alter the sensitivity to visual contrast within the target area. More recent research has shown that paying attention to the target or target area modulates contrast sensitivity, suggesting a top-down influence over contrast sensitivity that is mediated by attention. Here we report another form of top-down influence over contrast sensitivity that is unlikely to be mediated by attention. In particular, we show that knowledge and/or expectations about the levels of visual contrast that may appear in upcoming targets also affect how sensitive the observer is to the contrast in the target. This sort of knowledge-driven, top-down contrast sensitivity control could be used to preset the visual system’s contrast sensitivity to maximize discriminability and to protect contrast-sensitive processes from a contrast overload. Overall, our results suggest that existing models of contrast sensitivity might benefit from the inclusion of top-down control mechanisms. 相似文献
174.
Tamera R. Schneider Susan E. Rivers Joseph B. Lyons 《Journal of applied social psychology》2009,39(8):1928-1952
By borrowing from the biopsychosocial model of challenge and threat, we may understand when health communications adequately motivate behavior change or when they are overly distressing and inhibit behavior change. The present studies were guided by the biobehavioral model of persuasion, which predicts that different health appeals should evoke different appraisals, as well as psychological and physiological responses that motivate the adoption or rejection of health behaviors. Challenging messages should be associated with approach motivational tendencies, whereas threatening messages should be linked to avoidance. Findings from 2 experiments support the biobehavioral model of persuasion and offer mechanisms that confer message effectiveness. By understanding the psychological and physiological processes that drive message effectiveness, message designers can create more effective health appeals. 相似文献
175.
Several studies have demonstrated that acquired expertise influences aesthetic judgments. In this paradigm we used functional magnetic resonance imaging (fMRI) to study aesthetic judgments of visually presented architectural stimuli and control-stimuli (faces) for a group of architects and a group of non-architects. This design allowed us to test whether level of expertise modulates neural activity in brain areas associated with either perceptual processing, memory, or reward processing. We show that experts and non-experts recruit bilateral medial orbitofrontal cortex (OFC) and subcallosal cingulate gyrus differentially during aesthetic judgment, even in the absence of behavioural aesthetic rating differences between experts and non-experts. By contrast, activity in nucleus accumbens (NAcc) exhibits a differential response profile compared to OFC and subcallosal cingulate gyrus, suggesting a dissociable role between these regions in the reward processing of expertise. Finally, categorical responses (irrespective of aesthetic ratings) resulted in expertise effects in memory-related areas such as hippocampus and precuneus. These results highlight the fact that expertise not only modulates cognitive processing, but also modulates the response in reward related brain areas. 相似文献
176.
Operant generalization, a building block of cognition, has never been studied in neonates. We developed a preparation for
newly hatched quail in order to investigate the form of the generalization gradient very early in development. For their first
4–5 days after hatching, northern bobwhite chicks pecked for brief heat presentations while hearing a high-pitched sound repeated
at a constant rate (nondifferential training). Tempo generalization was then assessed in extinction. A significantly excitatory
average gradient resulted despite minimal postnatal experience. 相似文献
177.
Tinnitus ist ein Ph?nomen, welches für fast jeden Menschen physiologisch unter ruhigen Umgebungsbedingungen subjektiv wahrnehmbar
wird. Im psychosomatisch-psychotherapeutischen Setting ist dieses Symptom in der Regel im Rahmen einer Somatisierungsst?rung
(F45.0; F45.1) oder des chronisch-komplexen Tinnitus (F54.0, H93.1) anzutreffen. In der vorliegenden Arbeit wird ein integrativer
HNO-?rztlicher und psychosomatischer Therapieansatz vorgestellt: Ziel der Behandlung ist es, die Komponenten der akustischen
Wahrnehmung zu reorganisieren, das Ohrger?usch und die psychisch emotionale Wertung zu entkoppeln sowie dessen psychologische
Bedeutung zu ?ndern. Weiters wird ein Modell vorgestellt, wie die Depression – als h?ufigste komorbide Achse-I-St?rung – in
das diagnostisch- therapeutische Erkl?rungsmodell integriert werden kann. Zuletzt werden M?glichkeiten er?rtert, wie Patienten
mit chronisch-komplexem Tinnitus zur Aufnahme einer psychotherapeutischen Behandlung motiviert werden k?nnen. 相似文献
178.
Gabriele Schneider 《Psychopraxis》2009,12(1):26-27
Dein Tod hat eine Leere hinterlassen, die schwer zu füllen sein wird. Seltsamerweise ist kein Schmerz in mir, nur ein dankbares
Erinnern an fünf Jahre, die ich für dich da war, für dich da sein durfte. T?glich bin ich um die Mittagszeit zu dir gefahren,
um dich zu füttern, dir ein wenig Gesellschaft zu leisten, dein unweigerliches Versinken in deine eigene Welt, wenn schon
nicht aufzuhalten, denn das war unm?glich, so doch zumindest ein wenig hinauszuz?gern. 相似文献
179.
Pastoral Psychology - In Jungian theory, every human being, including the Christian believer, has a shadow side to his or her personality. The shadow, then, like it or not, is a part of our common... 相似文献
180.