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71.
Jennie Brown Catherine M. Brignell Sharinjeet K. Dhiman H. Valerie Curran Sunjeev K. Kamboj 《Neurobiology of learning and memory》2010,93(3):428-434
Although the amnestic effects of alcohol in humans are well known, its effects on emotional memory are unclear. In this study, using a randomized double-blind placebo-controlled design, we examine narrative emotional episodic memory in healthy human female volunteers (n = 32) who received either a single dose of alcohol (0.6 g/kg), or a placebo and then viewed neutral story elements presented in either a neutral or emotional context. Memory was tested for gist and detail of the neutral elements 3 days later in a surprise recognition test. Since alcohol modulates GABAergic neurotransmission and may exert its effects on emotion through the limbic system, we predicted that acute alcohol treatment would reduce the expected emotional memory-advantage for gist, leaving detail memory relatively unaffected. Furthermore, given previous findings showing that ‘primacy’ memory is enhanced by physiological arousal, we predicted that reduced arousal produced by alcohol would have the opposite effect and impair primacy memory relative to the middle or ‘recency’ sections of the narrative. Emotional arousal was expected to oppose this effect, so impaired primacy memory following alcohol was only expected in the neutral version of the narrative. Although there was a main effect of story phase (though not of story version), contrary to expectations, alcohol impaired primacy memory for emotionally encoded neutral material. The results suggest that under certain circumstances emotional context or physiological arousal make memories labile and susceptible to disruption through pharmacological manipulation during encoding. 相似文献
72.
Joe Mintoff 《Ratio》2008,21(1):64-84
Many of us experience the activities which fill our everyday lives as meaningful, and to do so we must (and do) hold them to be important. However, reflection seems to undercut this meaningfulness: our activities are aimed at ends which are arbitrary, those activities are themselves insignificant, and leave little of any real permanence. The aim of this paper is to explore whether this discrepancy is inevitable, and in particular to examine recent formulations of the old idea that we can transcend it by forming attachments less susceptible to being undercut. The paper contrasts the life of doing good (devoted, for example, to working for a moral cause) and the life of knowing good (devoted to the appreciation of the so‐called ‘higher’ things in life, such as art and science) as ways of finding meaning. 相似文献
73.
74.
People usually categorize objects more quickly at the basic level (e.g., “dog”) than at the subordinate (e.g., “collie”) or
superordinate (e.g., “animal”) levels. Notable exceptions to this rule include objects of expertise, faces, or atypical objects
(e.g., “penguin,” “poodle”), all of which show faster than normal subordinate-level categorization. We hypothesize that the
subordinate-level reaction time advantage for faces is influenced by their discriminability relative to other faces in the
stimulus set. First, we replicated the subordinate-level advantage for faces (Experiment 1) and then showed that a basic-level
advantage for faces can be elicited by increasing the perceptual similarity of the face stimuli, making discrimination more
difficult (Experiment 2). Finally, we repeated both effects within subjects, showing that individual faces were slower to
be categorized in the context of similar faces and more quickly categorized among diverse faces (Experiment 3). 相似文献
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76.
Layng TV 《The Behavior analyst / MABA》2009,32(1):163-184
This paper has two purposes; the first is to reintroduce Goldiamond's constructional approach to clinical behavior analysis and to the field of behavior analysis as a whole, which, unfortunately, remains largely unaware of his nonlinear functional analysis and its implications. The approach is not simply a set of clinical techniques; instead it describes how basic, applied, and formal analyses may intersect to provide behavior-analytic solutions where the emphasis is on consequential selection. The paper takes the reader through a cumulative series of explorations, discoveries, and insights that hopefully brings the reader into contact with the power and comprehensiveness of Goldiamond's approach, and leads to an investigation of the original works cited. The second purpose is to provide the context of a life of scientific discovery that attempts to elucidate the variables and events that informed one of the most extraordinary scientific journeys in the history of behavior analysis, and expose the reader (especially young ones) to the exciting process of discovery followed by one of the field's most brilliant thinkers. One may perhaps consider this article a tribute to Goldiamond and his work, but the tribute is really to the process of scientific discovery over a professional lifetime. 相似文献
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78.
Pater J 《Cognitive Science》2009,33(6):999-1035
Harmonic Grammar (HG) and Optimality Theory (OT) are closely related formal frameworks for the study of language. In both, the structure of a given language is determined by the relative strengths of a set of constraints. They differ in how these strengths are represented: as numerical weights (HG) or as ranks (OT). Weighted constraints have advantages for the construction of accounts of language learning and other cognitive processes, partly because they allow for the adaptation of connectionist and statistical models. HG has been little studied in generative linguistics, however, largely due to influential claims that weighted constraints make incorrect predictions about the typology of natural languages, predictions that are not shared by the more popular OT. This paper makes the case that HG is in fact a promising framework for typological research, and reviews and extends the existing arguments for weighted over ranked constraints. 相似文献
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80.
Five experiments investigated how the possession and experience of power affects the initiation of competitive interaction. In Experiments 1a and 1b, high-power individuals displayed a greater propensity to initiate a negotiation than did low-power individuals. Three additional experiments showed that power increased the likelihood of making the first move in a variety of competitive interactions. In Experiment 2, participants who were semantically primed with power were nearly 4 times as likely as participants in a control condition to choose to make the opening arguments in a debate competition scenario. In Experiment 3, negotiators with strong alternatives to a negotiation were more than 3 times as likely to spontaneously express an intention to make the first offer compared to participants who lacked any alternatives. Experiment 4 showed that high-power negotiators were more likely than low-power negotiators to actually make the first offer and that making the first offer produced a bargaining advantage. 相似文献