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ABSTRACT Both opponents and proponents of Singer's right to speak about euthanasia have concentrated on the tenability of his claims. They have ignored the question of what legitimate grounds there are for suppressing academic discussion, and have failed to take into account the discussion of freedom of speech in recent legal theory. To do this is the aim of my paper. Section I claims that Singer's position is immoral. Section 2 turns to the question of whether it is protected by freedom of speech, irrespective of its merits. I reject two lines of defence for Singer's opponents, that they had no opportunity to present their case, and the Kantian idea of the primacy of practical reason. Section 3 turns to a defence from legal theory. It argues that Singer's views do not pose the kind of threat to other legal and moral values which would license a suspension of his freedom of expression. I conclude that it is illegitimate to silence Singer, since he does not deny the right to live of his disabled opponents, but legitimate to protest against him, since he denies that some of their lives are worth living, in disregard of their own preferences.  相似文献   
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When humans are about to manipulate an object, our brains use visual cues to recall an internal representation to predict its weight and scale the lifting force accordingly. Such a long-term force profile, formed through repeated experiences with similar objects, has been proposed to improve manipulative performance. Skillful object manipulation is crucial for many animals, particularly those that rely on tools for foraging. However, despite enduring interest in tool use in non-human animals, there has been very little investigation of their ability to form an expectation about an object’s weight. In this study, we tested whether wild chimpanzees use long-term force profiles to anticipate the weight of a nut-cracking hammer from its size. To this end, we conducted a field experiment presenting chimpanzees with natural wooden hammers and artificially hollowed, lighter hammers of the same size and external appearance. We used calibrated videos from camera traps to extract kinematic parameters of lifting movements. We found that, when lacking previous experience, chimpanzees lifted hollowed hammers with a higher acceleration than natural hammers (overshoot effect). After using a hammer to crack open one nut, chimpanzees tuned down the lifting acceleration for the hollowed hammers, but continued lifting natural hammers with the same acceleration. Our results show that chimpanzees anticipate the weight of an object using long-term force profiles and suggest that, similarly to humans, they use internal representations of weight to plan their lifting movements.  相似文献   
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Panorama     

Panorama

Panorama  相似文献   
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Previous research on the fakeability of the Implicit Association Test (IAT) yielded inconsistent results. The present study simultaneously analyses several relevant factors: faking direction, type of instructions, and practice. Furthermore, it takes baseline individual differences into account. After a baseline assessment in a self-esteem IAT without faking instructions (t0), participants in the faking conditions then (t1) faked high or low scores without being provided with recommended strategies on how to do so (i.e., individual strategies). At t2 and t3, they were asked to fake the IAT after having received information on recommended faking strategies. At t4, faking direction was reversed. Without the recommended strategies, faking high scores was not possible, but faking low scores was. With the recommended strategies, participants needed additional practice to fake high scores. When faking directions were reversed, participants were successful without additional practice, suggesting a transfer in faking skills. In most of the faking attempts, faking success was moderated by individual differences in baseline implicit self-esteem. This suggests that the complex interplay of factors influencing faking success should be taken into account when considering the issue of fakeability of the IAT.  相似文献   
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For forensic expert witnesses the introduction of electronic surveillance to the German penal code system raised new questions, such as the effects on relapse prevention. This paper presents international experiences about the effects of electronic tagging, especially on relapse prevention, and lists the advantages and disadvantages of this procedure. Also the recommendations for electronic tagging concerning a sexual offender who was repeatedly convicted and released after 10 years of imprisonment are described.  相似文献   
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Quality of life has emerged as an essential health component that broadens the traditionally narrow concerns focused on only morbidity and life expectancy. Although a growing number of tools to measure quality of life are in circulation, there is a lack of guidelines as well as rigorous assessment for their use with pregnant and postpartum populations. It is also unclear whether these instruments could validly be employed to measure patient-reported outcomes in comparative effectiveness research of maternal care interventions. This paper reviews articles cited in CINAHL, COCHRANE, EMBASE, PSYCINFO, and PUBMED that addressed quality of life in pregnant and postpartum populations. Instruments used to measure quality of life in selected articles were assessed for their adherence to international guidelines for health outcomes instrument development and validation. The authors identified 129 articles that addressed quality of life in pregnant and/or postpartum women. Out of these, only 64 quality (generic and specific) scales were judged relevant to be included in this study. Analysis of measurement scales used in the pregnant and/or postpartum populations revealed important validity, reliability and psychometric inadequacies that negate their use in comparative effectiveness analysis in pregnant and post-partum populations. Valid, reliable, and responsive instruments to measure patient-reported outcomes in pregnant and postpartum populations are lacking. To demonstrate the effectiveness of various treatment and prevention programs, future research to develop and validate a robust and responsive quality of life measurement scale in pregnant and postpartum populations is needed.  相似文献   
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Examined the behavior and affiliation patterns of 118 highly, moderately, and nonaggressive 7-year-old children over the course of a 6-week summer school program. During free play, participants did not selectively associate on the basis of behavioral similarity, but initial mutual friendship choices did show a preference for similarly behaved peers. Nonreciprocated friendships at the beginning and end of the program and mutual friendships at the end revealed a preference of all children to be-friend nonaggressive peers. Moderately aggressive children increased their number of mutual friendships and their association with nonaggressive peers during free play, whereas highly aggressive children lost mutual friends. The aggressiveness of a child's playmates predicted the likelihood of that child behaving inappropriately during free play. Results suggest that selective affiliation may be the result of peer rejection rather than an active process of seeking similarly aggressive peers.  相似文献   
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