The Brownian motion of small particles interacting with a field at a finite temperature is a well-known and well-understood phenomenon. At zero temperature, even though the thermal fluctuations are absent, quantum fields still possess vacuum fluctuations. It is then interesting to ask whether a small particle that is interacting with a quantum field will exhibit Brownian motion when the quantum field is assumed to be in the vacuum state. In this paper, we study the cases of a small charge and (...) an imperfect mirror interacting with a quantum scalar field in (1 + 1) dimensions. Treating the quantum field as a classical stochastic variable, we write down a Langevin equation for the particles. We show that the results we obtain from such an approach agree with the results obtained from the fluctuation-dissipation theorem. Unlike the finite temperature case, there exists no special frame of reference at zero temperature and hence it is essential that the particles do not break Lorentz invariance. We find that that the scalar charge breaks Lorentz invariance, whereas the imperfect mirror does not. We conclude that small particles such as the imperfect mirror will exhibit Brownian motion even in the quantum vacuum, but this effect can be so small that it may prove to be difficult to observe it experimentally. (shrink)

Our paper contributes to the rapidly expanding body of experimental research on transformative decision making, and in the process, marks out a novel empirical interpretation for assessments of subjective value in transformative contexts. We start with a discussion of the role of subjective value in transformative decisions, and then critique extant experimental work that explores this role, with special attention to Reuter and Messerli (2018). We argue that current empirical treatments miss a crucial feature of practical deliberation manifesting across a (...) variety of everyday decisions: often, people attach more weight to decision criteria that they can know—a phenomenon known as the “evaluability bias.” In transformative contexts, if people cannot know the subjective value of an option, they are unlikely to attach it much weight. Despite this, people may care very much about such value. We then use this point to develop and present new empirical results that, in addition to supporting our concerns about evaluability bias, support the hypothesis that people care about subjective value. Our work enriches the current philosophical understanding of transformative decisions and helps to frame the emerging experimental paradigm for the empirical dimensions of the debate. (shrink)

ABSTRACTEmotional distractors can impair perception of subsequently presented targets, a phenomenon called emotion-induced blindness. Do emotional distractors lose their power to disrupt perception when appearing with increased frequency, perhaps due to desensitisation or enhanced recruitment of proactive control? Non-emotional tasks, such as the Stroop, have revealed that high frequency distractors or conflict lead to reduced interference, and distractor frequency appears to modulate attentional capture by emotional distractors in spatial attention tasks. But emotion-induced blindness is thought to reflect perceptual competition between (...) targets and emotional distractors, and it is unclear whether high frequency emotional stimuli cause less disruption at this relatively early stage of processing. In four experiments, participants searched streams of images for a rotated target image. A negative or neutral distractor appeared before the target, and their relative frequency was manipulated. Across all exper... (shrink)

This article focuses on the most recent debates in the vibrant and emerging subfield of philosophy of emotion research. Given the dominance of 'cognitivist' theories of emotion in the philosophy, neurobiology, and cognitive science of emotion, we have witnessed a move away from attempts to pit reason and emotion against each other. This move, however, has opened the door to a host of thorny challenges for how we think about our affective relationship with the world, with concepts, and with other (...) minds. (shrink)

Jean Philiponus s'est toujours opposé à la notion nestorienne des anges servant les hommes à la place de Dieu. Jean Philiponus s'inscrit dans le courant égyptien critique de la fin du VIe siècle de certains récits apocryphes des anges dans l'univers primitif. L'argumentation de Philoponus est anti-dyophysite. Il s'attache à démontrer que l'univers que nous percevons est peuplé d'entités non corporelles puissantes, au service de Dieu et dont le rôle est de faire passer des messages aux êtres humains. Ces entités (...) ont été créées par le Dieu trinitaire avant l'acte divin de création. (shrink)

The struggle over legal abortion access in the United States is a religious controversy, not a scientific debate. Religious activists who believe that meaningful individual life (i.e., “personhood”) begins at a specific “moment-of-conception” are attempting to pass laws that force this view upon all pregnant persons, irrespective of their medical circumstances, individual preferences, or personal religious beliefs. This paper argues that such actions promote a constitutionally prohibited “establishment of religion.” Abortion policy in a secular state must be based upon scientifically (...) accurate biology, not unprovable theological presuppositions. The scientific facts regarding human pregnancy do not support the position that personhood begins with fertilization—at which point a pregnancy does not yet even exist. Abortion policy should regard the embryo/fetus as part of the pregnant individual’s body until delivery. We argue that individual “personhood” only begins when the _latent_ potentialities of the fetal nervous system are _actualized_ in the newborn after delivery. The paper argues that instantiating non-scientific beliefs concerning embryonic/fetal “personhood” into the law as the basis for abortion policy establishes a state-sponsored religion. The protection of religious liberty requires that abortion be decriminalized. Abortion should be treated like any other medical procedure and regulated similarly. To protect both religious freedom and sound medical practice, individual legal personhood should be recognized as beginning only at birth. (shrink)

Entry of new organizations, including multinational enterprises from emerging markets, raises the ethical question of will they benefit society. The concept of legitimacy answers this question because it is the overall assessment of the appropriateness of organizational ends and means. Moreover, gaining legitimacy enables EMNEs to succeed in new host countries. Past work examined collective level indicators of the legitimacy of MNEs, but recent research recognizes the importance of individuals’ perceptions as the micro-foundation of legitimacy. This study first uses new (...) pragmatism, deontology, and utilitarianism to demonstrate that legitimacy is fundamentally an ethical concept—a perspective that has been overlooked in management research. Second, this study uses a seven-step procedure to develop and validate a measure of individuals’ perceptions of the legitimacy of Chinese EMNEs operating in The Netherlands, a developed country. Six dimensions of legitimacy were identified. The study also finds support for this legitimacy judgment process linking the dimensions: validating knowledge → propriety judgments → generalized judgment. This work provides additional micro-foundations to research on legitimacy and contributes to the ongoing process of construct validation. Future research could use the validated measure in other settings and use specific ethical theories in depth to refine the concept of legitimacy. (shrink)

One of the most debated issues in African philosophy concerns the question of ethnophilosophy. While most Particularists equate it to African philosophy, the Universalists reject it as philosophy let alone being African philosophy. The rationale behind the second position is that ethnophilosophy is said to be descriptive and lacks argumentation, criticality, rigor and systematicity, which are the hallmarks of philosophy. What these two views revolve around is the question of the place of ethnophilosophy in African philosophy. Here, I focus on (...) two scholars who have sought to address this question. The first is Ada Agada, who opines that ethnophilosophy plays a foundational role to African philosophy. The other is Aribiah Attoe, who sees this view as a myth that must be done away with. In this paper, I show two things: first, I show that these two conflicting views arose due to both scholars’ failure to clarify their ideas of what makes a philosophy African. Second, I converse with Attoe on his critique of the foundational role of ethnophilosophy as a myth. Here, I contend that Attoe’s view is a misreading of Agada’s views and that Attoe’s position that critical rigor instead of ethnophilosophy should be the foundation of African philosophy is unfounded. My argument is that criticality is just one among other tools of philosophy; and a tool of philosophy cannot be its foundation. Keywords: Agada, African Philosophy, Attoe, criticality, ethnophilosophy, Ezin’ulo Ontology. (shrink)