ABSTRACT:Psychedelic substances have great promise for the treatment of many conditions, and they are the subject of intensive research. As with other medical treatments, both research and clinical use of psychedelics depend on our ability to ensure informed consent by patients and research participants. However, some have argued that informed consent for psychedelic use may be impossible, because psychedelic experiences can be transformative in the sense articulated by L. A. Paul (2014). For Paul, transformative experiences involve either the acquisition of (...) knowledge that cannot be obtained in any other way or changes in the self. Either of these characteristics may appear to undermine informed consent. This article argues, however, that there is limited evidence that psychedelic experiences are transformative in Paul's sense, and that they may not differ in their transformative features from other common medical experiences for which informed consent is clearly possible. Further, even if psychedelic experiences can be transformative, informed consent is still possible. Because psychedelic experiences are importantly different in several respects from other medical experiences, this article closes with recommendations for how these differences should be reflected in informed consent processes. (shrink)

The question of how to handle incidental findings has sparked a heated debate among neuroimaging researchers and medical ethicists, a debate whose urgency stems largely from the recent explosion in the number of imaging studies being conducted and in the sheer volume of scans being acquired. Perhaps the point of greatest controversy within this debate is whether the magnetic resonance imaging scans of all research participants should be reviewed in an active search for pathology and, moreover, whether this search should (...) be performed by a radiologist. Resistance to routine readings performed by radiologists, as opposed to selective review of those scans on which investigators have spotted a possible IF, has been fueled in part by the obvious and enormous cost — financial and logistical — of engaging radiologists to read massive numbers of scans. This cost would be especially burdensome, even prohibitive, to investigators who are not affiliated with a medical center, because of their limited access to radiologists and other medical expertise. (shrink)

Ecologists are challenged by the need to bridge and synthesize different approaches and theories to obtain a coherent understanding of ecosystems in a changing world. Both food web theory and regime shift theory shine light on mechanisms that confer stability to ecosystems, but from different angles. Empirical food web models are developed to analyze how equilibria in real multi-trophic ecosystems are shaped by species interactions, and often include linear functional response terms for simple estimation of interaction strengths from observations. Models (...) of regime shifts focus on qualitative changes of equilibrium points in a slowly changing environment, and typically include non-linear functional response terms. Currently, it is unclear how the stability of an empirical food web model, expressed as the rate of system recovery after a small perturbation, relates to the vulnerability of the ecosystem to collapse. Here, we conduct structural sensitivity analyses of classical consumer-resource models in equilibrium along an environmental gradient. Specifically, we change non-proportional interaction terms into proportional ones, while maintaining the equilibrium biomass densities and material flux rates, to analyze how alternative model formulations shape the stability properties of the equilibria. The results reveal no consistent relationship between the stability of the original models and the proportionalized versions, even though they describe the same biomass values and material flows. We use these findings to critically discuss whether stability analysis of observed equilibria by empirical food web models can provide insight into regime shift dynamics, and highlight the challenge of bridging alternative modelling approaches in ecology and beyond. (shrink)

Hoerl & McCormack's dual systems framework provides a new avenue toward the scientific investigation of temporal cognition. However, some shortcomings of the model should be considered. These issues include their reliance on a somewhat vague consideration of “systems” rather than specific computational processes. Moreover, the model does not consider the subjective nature of temporal experience or the role of consciousness in temporal cognition.

Two interpretations of the precautionary principle are considered. According to the normative interpretation, the precautionary principle should be characterised in terms of what it urges doctors and other decision makers to do. According to the epistemic interpretation, the precautionary principle should be characterised in terms of what it urges us to believe. This paper recommends against the use of the precautionary principle as a decision rule in medical decision making, based on an impossibility theorem presented in Peterson . However, (...) the main point of the paper is an argument to the effect that decision theoretical problems associated with the precautionary principle can be overcome by paying greater attention to its epistemic dimension. Three epistemic principles inherent in a precautionary approach to medical risk analysis are characterised and defended. (shrink)

This paper sets out to give sufficient detail to the notion of mental simulation to allow an appraisal of its contribution to ‘mindreading’ in the context of the ‘false-belief tasks’ used in developmental psychology. We first describe the reasoning strategy of ‘modified derivation’, which supports counterfactual reasoning. We then give an analysis of the logical structure of the standard false-belief tasks. We then show how modified derivation can be used in a hybrid strategy for mindreading in these tasks. We then (...) formulate the hypothesis that children become able (around the age of 4 years) to pass these tasks when they acquire the counterfactual reasoning ability required in this strategy. We find this to be consistent with various empirical findings. We then discuss the implications for the theory/simulation debate, meta-representation and pretence. (shrink)

This article provides an ethical analysis of the U.S. practice guideline update on disorders of consciousness. Our analysis focuses on the guideline’s recommendations regarding the use of investigational neuroimaging methods to assess brain‐injured patients. Complex and multifaceted ethical issues have emerged because these methods alter the clinical understanding of consciousness. We address issues of false hope, patient suffering, and cost. We argue that, in spite of these concerns, there is significant benefit to using neuroimaging to assess brain‐injured patients in most (...) cases. (shrink)

In Australia and other countries, certain groups of women have traditionally been denied access to assisted reproductive technologies . These typically are single heterosexual women, lesbians, poor women, and those whose ability to rear children is questioned, particularly women with certain disabilities or who are older. The arguments used to justify selection of women for ARTs are most often based on issues such as scarcity of resources, and absence of infertility , or on social concerns: that it “goes against nature”; (...) particular women might not make good mothers; unconventional families are not socially acceptable; or that children of older mothers might be orphaned at an early age. The social, medical, legal, and ethical reasoning that has traditionally promoted this lack of equity in access to ARTs, and whether the criteria used for client deselection are ethically appropriate in any particular case, are explored by this review. In addition, the issues of distribution and just “gatekeeping” practices associated with these sensitive medical services are examined. (shrink)

This paper critically examines whether patients with severe brain injury, who can only communicate through assistive neuroimaging technologies, may permissibly participate in medical decisions. We examine this issue in the context of a unique case study from the Brain and Mind Institute at the University of Western Ontario. First, we describe how the standard approach to medical decision making might problematically exclude patients with communication impairments secondary to severe brain injury. Second, we present a modified approach to medical decision making. (...) We argue that this approach might warrant the inclusion of some patients with severe brain injury in low-stakes decisions, or to express preferences. Third, we present a model of supported decision making to address recalcitrant uncertainty. We conclude by suggesting that the modified approach to decision making and supported decision making might allow a patient with severe brain injury to participate in some medical decisions. Our analysis is provisional and has not yet been implemented in practice. Our discussion is intended to generate further debate on approaches to enhancing autonomy in patients with profound motor and cognitive impairments. (shrink)

Cross-national studies of business-related ethicality frequently have concluded that Americans possess higher ethical standards than non-Americans. These conclusions have generally been based on survey responses of relatively small convenience samples of individuals in a very limited number of countries. This article reports a study of the relationship between nationality and business-related ethicality based on survey responses from more than 6300 business students attending 120 colleges and universities in 36 countries. Two well-documented determinants of business ethics (gender and religiosity) were investigated (...) as moderators of the nationality–business ethicality relationship. The major research finding is that, while statistically significant differences were found between the business-related ethicality of American survey participants and the business-related ethicality of the non-American survey participants, the magnitudes of the differences were not substantial. The results of the study suggest that (i) more empirical cross-cultural/national research is required on business-related ethicality and (ii) previous explanations for cross-cultural/national differences in ethics need to be reconsidered before further generalizations are warranted. (shrink)

Is it really necessary to add something like the Health Impact Fund to the existing global patent system? We can divide this question into two parts. First, is there something seriously wrong with the status quo and, if so, what exactly is it? Second, how do we best go about solving the problem; that is, how does the design of the reform proposal address the flaws in the status quo? Jorn Sonderholm, in his critique of the Health Impact Fund, or (...) HIF, raises both of these issues. These criticisms afford us the opportunity to reaffirm our commitment to ameliorating glaring problems with the current system for incentivizing R&D for essential medicines, and to clarify why we believe the HIF is exactly what the world needs. (shrink)

Li Zehou and Vera Schwarcz argue that key political events in twentieth century Chinese intellectual history, like the May Fourth Movement, separate one generation of intellectuals from the next.1 I have also frequently heard contemporary Mainland intellectuals speak of generational differences among themselves. In lectures, Liu Binyan often contrasts the idealism and suffering of his generation with the disillusionment of the younger group of intellectuals and writers that grew up during the Cultural Revolution. This notion of generation seems to distinguish (...) between an older group and a younger and unproven one. The relationship between these successive generations has taken a variety of forms, but one can also argue that it has two paradigms. On the one hand, there is a relationship based on the idea of continuity, on the idea that a pupil from the younger generation obediently carries on a tradition or school of thought his older master inherited or created. The best example of this master-disciple relationship is Confucius's relationship to his followers. This idea also has strong familial overtones, and can be seen in the stress Confucian texts give to the bond between father and son, and to the values that underlie this bond: the notions of xiao, or filial piety, and zhong, or loyalty. This idea of chuan or transmission from one generation to the next is a strong element in sinicized religions like Chan Buddhism. Transmission of an idea, or even a family name, is a value informing many aspects of life in late imperial society. Mary Rankin and Hilary Beattie's work on family lineages shows how local elites used all the financial, cultural, and political means available to them to preserve the elite status of their extended families over several hundred years.2 Education, provided by teachers in local village and lineage schools, was the key to transmitting and inculcating these ethical values of loyalty, obedience, filial piety, and ethical behavior. The values informing this intergenerational relationship obligated the teacher to act in a morally conscious way, but also gave him power over his pupils, who were taught to obediently follow him. (shrink)

Both unipolar and bipolar depression have been linked with impairments in executive functioning. In particular, mood symptom severity is associated with differences in common EF, a latent measure of general EF abilities. The relationship between mood disorders and EF is particularly salient in adolescence and young adulthood when the ongoing development of EF intersects with a higher risk of mood disorder onset. However, it remains unclear if common EF impairments have associations with specific symptom dimensions of mood pathology such as (...) blunted positive affect, mood instability, or physiological arousal, or if differences in common EF more broadly relate to what is shared across various symptom domains, such as general negative affect or distress. To address this question, bifactor models can be applied to simultaneously examine the shared and unique contributions of particular mood symptom dimensions. However, no studies to our knowledge have examined bifactor models of mood symptoms in relation to measures of common EF. This study examined associations between common EF and general vs. specific symptom dimensions using structural equation modeling in adolescents and young adults with varying severity of mood symptoms. A General Depression factor capturing shared variance across symptoms statistically predicted lower Common EF. Additionally, a factor specific to physiological arousal was associated with lower Common EF. Anhedonia-specific and Mania-specific factors were not significantly related to Common EF. Altogether, these results indicate that deficits in common EF are driven by, or reflect, general features of mood pathology that are shared across symptom dimensions but are also specifically associated with physiological arousal. (shrink)

We employ a frequency-dependent asymmetric and causality analysis to investigate the connectedness between gold and cryptocurrencies during the COVID-19 pandemic. Hence, the variational mode decomposition-based quantile regression is utilised. Findings from the study divulge that the variational mode functions at the lower quantiles are mostly significant and negative indicating that gold acts as a safe haven, a diversifier at most market conditions with insignificant coefficients, and a hedge at normal market conditions for most cryptocurrencies at various investment horizons. Particularly, hedging (...) benefits mostly occur in the short- and medium-term for Bitcoin and Ripple, as well as Bitcoin and Dogecoin in the long-term with gold. This implies that there is high persistence in the hedging properties of gold with Bitcoin, followed by Ripple. We notice more significant relationship between gold and some cryptocurrencies in the long-term of the COVID-19 pandemic relative to the medium-term emphasising the delayed responses of prices to information. Investors are recommended to be observant and mindful of investing in these markets due to the different dynamics. (shrink)

Willem II van Haecht?s panel of the Cabinet of Cornelis van der Geest (1628), introduces the viewer to the theme of the Five Senses by including five prominently displayed paintings, each corresponding to one of the senses, in the foreground. The paper offers a new reading of the panel, suggesting that this image may be read as an allegory of the Five Senses, proposing this theme as a key to the rhetorical performance the collector, van der Geest, is shown undertaking, (...) and connecting the senses to the picture?s punning motto: Vive l?Esprit. (shrink)