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The early detection and accurate localization of threatening sounds is vital for the survival of military personnel. The purpose of the present study was to investigate the detection, localization, and response time to an M-16 rifle magazine insertion click in three background conditions: jungle, pink, and ambient noise. The level of the click varied from -18 to 0 dB signal-to-noise ratio (SNR). Reported results indicate that detection rates of 50, 70, and 100% required SNRs of ?6 to ?12, ?3, and 0 dB, respectively. Localization accuracy of 50 and 80% within a ±15° angle required SNRs of about ?6 and 0 dB, respectively; 100% accuracy was never achieved. Response time was about 2.0–2.5 s for high SNRs but increased gradually at poorer SNRs. The military relevance of the reported findings is discussed. 相似文献
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Tomasz Rzepiński 《Theoretical medicine and bioethics》2014,35(4):271-288
The present paper deals with the problem of evaluating empirical evidence for therapeutic decisions in medicine. The article discusses the views of Nancy Cartwright and John Worrall on the function that randomization plays in ascertaining causal relations with reference to the therapies applied. The main purpose of the paper is to present a general idea of alternative method of evaluating empirical evidence. The method builds on data analysis that makes use of rough set theory. The first attempts to apply the method show that it is an interesting alternative to randomized controlled trials. 相似文献
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Collective Narcissism Predicts Hypersensitivity to In‐group Insult and Direct and Indirect Retaliatory Intergroup Hostility 下载免费PDF全文
Results of five studies (N = 1596) linked collective narcissism—a belief in in‐group exaggerated greatness contingent on external validation—to direct and indirect, retaliatory hostility in response to situations that collective narcissists perceived as insulting to the in‐group but which fell well beyond the definition of an insult. In Turkey, collective narcissists responded with schadenfreude to the European economic crisis after feeling humiliated by the Turkish wait to be admitted to the European Union (Study 1). In Portugal, they supported hostile actions towards Germans and rejoiced in the German economic crisis after perceiving Germany's position in the European Union as more important than the position of Portugal (Study 2). In Poland, they supported hostile actions towards the makers of a movie they found offensive to Poland (Studies 3 and 5) and responded with direct and indirect hostility towards a celebrity whose jokes about the Polish government they found offensive (Study 4). Comparisons with self‐positivity and in‐group positivity indices and predictors of intergroup hostility indicated that collective narcissism is the only systematic predictor of hypersensitivity to in‐group insult followed by direct and indirect, retaliatory intergroup hostility. Copyright © 2016 European Association of Personality Psychology 相似文献
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Synthese - In this paper I consider the question of whether absolute discernibility is attainable in symmetric languages. Simon Saunders has proven that all facts expressible in first-order... 相似文献
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Tomasz Smoleń Jan Jastrzebski Eduardo Estrada Adam Chuderski 《Memory & cognition》2018,46(8):1315-1330
Cognitive training and brain stimulation studies have suggested that human cognition, primarily working memory and attention control processes, can be enhanced. Some authors claim that gains (i.e., post-test minus pretest scores) from such interventions are unevenly distributed among people. The magnification account (expressed by the evangelical “who has will more be given”) predicts that the largest gains will be shown by the most cognitively efficient people, who will also be most effective in exploiting interventions. In contrast, the compensation account (“who has will less be given”) predicts that such people already perform at ceiling, so interventions will yield the largest gains in the least cognitively efficient people. Evidence for this latter account comes from reported negative correlations between the pretest and the training/stimulation gain. In this paper, with the use of mathematical derivations and simulation methods, we show that such correlations are pure statistical artifacts caused by the widely known methodological error called “regression to the mean”. Unfortunately, more advanced methods, such as alternative measures, linear models, and control groups do not guarantee correct assessment of the compensation effect either. The only correct method is to use direct modeling of correlations between latent true measures and gain. As to date no training/stimulation study has correctly used this method to provide evidence in favor of the compensation account, we must conclude that most (if not all) of the evidence should be considered inconclusive. 相似文献
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Tell Me What I Wanted to Hear: Confirmation Effect in Lay Evaluations of Financial Expert Authority 下载免费PDF全文
In real life, people engage in interactive decision processes by consulting with experts. However, before taking advice, they must recognise the authority of an expert to assess the quality of the advice. The main goal of this research was to investigate how the confirmation effect affects lay evaluations of the epistemic authority of financial experts. Experiment 1 showed that lay people tend to ascribe greater epistemic authority to those experts whose advice confirms people's opinions, both measured and manipulated. Experiment 2 revealed that when participants' own opinions are not salient, people tend to evaluate experts' authority as higher when their advice confirms social norms. In Experiment 3 we jointly investigated the effects of participants' own opinions and social norms on the evaluations of authority. When both sources of expertise were made salient, decision‐makers favoured advice confirming their own beliefs and used it to evaluate experts' authority. Three interpretations of the role confirmation plays in the experts' authority evaluations are proposed: (1) self‐defensive strategies; (2) processing fluency; and (3) psychological consequences of naïve realism. The paper discusses practical implications of the results. We propose that increasing consumers' knowledge about biases might protect their evaluations of financial advice from being susceptible to the confirmation effect. 相似文献
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Axiomathes - The aims of this paper are (i) to provide a detailed taxonomy of noncanonical uses of interrogative sentences, i.e. when they are used not to ask a question but to convey some... 相似文献
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Topoi - Gestural and pantomimic accounts of language origins propose that language did not develop directly from ape vocalisations, but rather that its emergence was preceded by an intervening... 相似文献