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21.
David Enoch 《Philosophical Studies》2010,148(3):413-438
Metaethical—or, more generally, metanormative—realism faces a serious epistemological challenge. Realists owe us—very roughly
speaking—an account of how it is that we can have epistemic access to the normative truths about which they are realists.
This much is, it seems, uncontroversial among metaethicists, myself included. But this is as far as the agreement goes, for
it is not clear—nor uncontroversial—how best to understand the challenge, what the best realist way of coping with it is,
and how successful this attempt is. In this paper I try, first, to present the challenge in its strongest version, and second,
to show how realists—indeed, robust realists—can cope with it. The strongest version of the challenge is, I argue, that of
explaining the correlation between our normative beliefs and the independent normative truths. And I suggest an evolutionary
explanation (of a pre-established harmony kind) as a way of solving it. 相似文献
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Jessie L. C. Shmool Michael A. Yonas Ogonnaya Dotson Newman Laura D. Kubzansky Evelyn Joseph Ana Parks Charles Callaway Lauren G. Chubb Peggy Shepard Jane E. Clougherty 《American journal of community psychology》2015,56(1-2):145-155
There is growing interest in the role of psychosocial stress in health disparities. Identifying which social stressors are most important to community residents is critical for accurately incorporating stressor exposures into health research. Using a community‐academic partnered approach, we designed a multi‐community study across the five boroughs of New York City to characterize resident perceptions of key neighborhood stressors. We conducted 14 community focus groups; two to three in each borough, with one adolescent group and one Spanish‐speaking group per borough. We then used systematic content analysis and participant ranking data to describe prominent neighborhood stressors and identify dominant themes. Three inter‐related themes regarding the social and structural sources of stressful experiences were most commonly identified across neighborhoods: (1) physical disorder and perceived neglect, (2) harassment by police and perceived safety and (3) gentrification and racial discrimination. Our findings suggest that multiple sources of distress, including social, political, physical and economic factors, should be considered when investigating health effects of community stressor exposures and psychological distress. Community expertise is essential for comprehensively characterizing the range of neighborhood stressors that may be implicated in psychosocial exposure pathways. 相似文献
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Several studies have shown that d-amphetamine (DAMP) speeds mean reaction time (RT). However, the use of mean RT may obscure important aspects of the drug response. Therefore we applied the Poisson-Erlang (PE) stochastic model of choice reaction time proposed by Pieters (1985) to the RT distribution. This model proposes that the RT distribution is generated by two states: Processing (P) and Distraction (D). RT represents the sum of the time spent in each of these states. P is the time taken to complete a set of cognitive operations which are required to give a correct response. D represents the time taken by all other activities. RTs were collected using a task (SERS) in which stimulus and response complexity each had two levels, easy and hard. Subjects were tested pre- and postdrug. Drug conditions were: placebo, 10 mg d-amphetamine (DAMP), 4 mg of the dopamine agonist, pimozide, and a combination of DAMP and pimozide (COMBO). Parameters of the model were derived using methods described by Pieters. Four measures were analyzed: Processing Time (PT); Mean Time per distraction (XTD); Distraction Rate (DR); and Total Distraction Time per trial (TDT). Mean RT is also presented. Analyses of the effects of task conditions on the parameters of the model were made using the predrug sessions. Mean RT was increased by both stimulus and response complexities as was PT. TDT was increased by the task conditions. The PE measures did not change over days. DAMP speeded mean RT. However, this effect did not interact with the task factors. DAMP speeded processing and reduced distraction. Processing was speeded only in the hard response condition, distraction time was reduced only in the easy response condition. The results indicate that the PE model can be successfully applied to fast RT tasks. More importantly, the parameters of the model revealed important pharmacological effects that were not apparent in mean RT. DAMP speeds cognitive operations related to motor preparation and reduces the effects of distraction. Consistent with past studies there are no indications that DAMP interacted with stimulus processing. The distraction effect appears to be mediated by an increase in the rate of distraction and a decrease in the average time of these distractions. 相似文献
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Young observers were challenged to induce a marked monocular accommodative response to a relatively weak accommodative stimulus by placing a-9 diopter contact lens on the eye. At first, observers could not produce the desired response, but with training, three of four subjects achieved criterion. Both a voluntary accommodative response and a response to an adequate accommodative stimulus were apparently involved. The voluntary component of the response could be demonstrated by having the observers repeat the task in total darkness. 相似文献
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David Enoch 《Philosophical Studies》2007,133(2):285-311
In this paper I argue, first, that the only difference between Epistemicism and Nihilism about vagueness is semantic rather
than ontological, and second, that once it is clear what the difference between these views is, Nihilism is a much more plausible
view of vagueness than Epistemicism. Given the current popularity of certain epistemicist views (most notably, Williamson’s),
this result is, I think, of interest. 相似文献
30.
Mark R. Dixon Mary Rachel Enoch Jordan Belisle 《Journal of applied behavior analysis》2017,50(4):819-824
Twenty‐five recreational gamblers were initially asked to place bets on either red or black positions on a roulette board in a simulated casino setting. Each participant was then exposed to a stimulus pairing observing procedure which attempted to develop equivalence classes between one color (black or red) and traditionally positive words (e.g., love, happy, sex) and another color (black or red) and traditionally negative words (e.g., death, cancer, taxes), in the absence of consequence manipulations. Twenty‐one of the twenty‐five participants demonstrated greater response allocation to the color position on the roulette board that participated in a relational network with the positive words. Variations in sequencing of experimental conditions had no impact on poststimulus‐pairing wagers, but did impact tests for equivalence accuracy. 相似文献