Route memory is frequently assessed in virtual environments. These environments can be presented in a fully controlled manner and are easy to use. Yet they lack the physical involvement that participants have when navigating real environments. For some aspects of route memory this may result in reduced performance in virtual environments. We assessed route memory performance in four different environments: real, virtual, virtual with directional information (compass), and hybrid. In the hybrid environment, participants walked the route outside on an open (...) field, while all route information (i.e., path, landmarks) was shown simultaneously on a handheld tablet computer. Results indicate that performance in the real life environment was better than in the virtual conditions for tasks relying on survey knowledge, like pointing to start and end point, and map drawing. Performance in the hybrid condition however, hardly differed from real life performance. Performance in the virtual environment did not benefit from directional information. Given these findings, the hybrid condition may offer the best of both worlds: the performance level is comparable to that of real life for route memory, yet it offers full control of visual input during route learning. (shrink)

Spatial relations are central to geometrical thinking. With respect to the classical elementary geometry of Euclid’s Elements, a distinction between co-exact, or qualitative, and exact, or metric, spatial relations has recently been advanced as fundamental. We tested the universality of intuitions of these relations in a group of Senegalese and Dutch participants. Participants performed an odd-one-out task with stimuli that in all but one case display a particular spatial relation between geometric objects. As the exact/co-exact distinction is closely related to (...) Kosslyn’s categorical/coordinate distinction, a set of stimuli for testing all four types was used. Results suggest that intuitions of all spatial relations tested are universal. Yet, culture has an important effect on performance: Dutch participants outperformed Senegalese participants and stimulus layouts affect the categorical and coordinate processing in different ways for the two groups. Differences in level of education within the Senegalese participants did not affect performance. (shrink)

With technological possibilities in healthcare steadily increasing, more tools for digital cognitive rehabilitation become available. Acceptance of such technological advances is crucial for successful implementation. Therefore, we examined technology acceptance specifically for this form of rehabilitation in a sample of healthcare providers involved in cognitive rehabilitation. An adjusted version of the Technology Acceptance Model questionnaire was used, including the subscales for perceived usefulness, perceived ease of use, subjective norm, and intention to use, which all contribute to actual use of a (...) specific technology. Results indicate a generally favorable attitude toward the use of digital cognitive rehabilitation and positive responses toward the TAM constructs. Only for subjective norm, a neutral mean response was found, indicating that this could pose a potential obstacle toward implementation. Potential differences between subgroups of different age, gender, and professional background were assessed. Age and gender did not affect the attitude toward digital cognitive rehabilitation. Occupational therapists showed lower scores than healthcare psychologists and physiatrists with regard to perceived usefulness, possibly linked to a difference in operational and managerial tasks. The findings of his study stimulate further implementation of digital cognitive rehabilitation, where the role of subjective norms should be specifically considered. (shrink)

In language evolution research, the use of computational and experimental methods to investigate the emergence of structure in language is exploding. In this review, we look exclusively at work exploring the emergence of structure in speech, on both a categorical level, and a combinatorial level. We show that computational and experimental methods for investigating population-level processes can be effectively used to explore and measure the effects of learning, communication and transmission on the emergence of structure in speech. We also look (...) at work on child language acquisition as a tool for generating and validating hypotheses for the emergence of speech categories. Further, we review the effects of noise, iconicity and production effects. (shrink)

Background Self-binding directives (SBDs) are psychiatric advance directives that include the possibility for service users to consent in advance to compulsory care in future mental health crises. Legal provisions for SBDs exist in the Netherlands since 2008 and were updated in 2020. While ethicists and legal scholars have identified several benefits and risks of SBDs, few data on stakeholder perspectives on SBDs are available. Aims The aim of the study was to identify opportunities and challenges of SBDs perceived by stakeholders (...) who have personal or professional experience with legally enforceable SBDs. Methods Data collection was carried out in the Netherlands from February 2020 to October 2021 by means of semi-structured interviews. Participants were selected through purposive sampling and snowball methods. Interviews were conducted with mental health service users (n = 7), professionals (n = 13), and an expert on SBD policy (n = 1), resulting in a total number of 21 interviews. The data were analyzed thematically. Results Perceived benefits of SBDs included increased autonomy, improvement of the therapeutic relationship, possibility of early intervention and prevention of harm, prevention of compulsory care, reduction of the duration of compulsory care and recovery, mitigation of negative experiences around compulsory care, and guidance for professionals in providing compulsory care. Perceived risks included infeasibility of SBD instructions, difficulty in decision-making around SBD activation, limited accessibility of SBDs, disappointment of service users due to non-compliance with SBDs, and limited evaluation and updating of SBD content. Barriers to SBD completion included lack of knowledge of SBDs among professionals, lack of motivation or insight among service users, and lack of professional support for SBD completion. Facilitators of SBD completion and activation included support for SBD completion, involvement of relatives and peer experts, specification of SBD content, and evaluation of compulsory care and SBD content. The new legal framework was regarded as having both positive and negative effects on SBD implementation. Conclusions Stakeholders who have personal or professional experience with legally enforceable SBDs perceive SBDs as having important benefits and tend not to articulate the fundamental ethical concerns about SBDs which can be found in the ethics and legal literature. Instead, they perceive ethical and practical challenges that can be addressed through the implementation of suitable safeguards. (shrink)

Purpose – The purpose of this paper is to develop a novel approach for the ethical analysis of data collected from an online file-sharing site known as The PirateBay. Since the creation of Napster back in the late 1990s for the sharing and distribution of MP3 files across the Internet, the entertainment industry has struggled to deal with the regulation of information sharing at large. Added to the ethical questions of censorship and distributive justice are questions related to the use (...) of data collected from such file-sharing sites for research purposes. Design/methodology/approach – The approach is based on previous work analysing the use of data from online social networking sites and involves value analysis of the collection of data throughout the data’s various life cycles. Findings – This paper highlights the difficulties faced when attempting to apply a deontological or utilitarian approach to cases like the one used here. With this in mind, the authors point to a virtue ethics approach as a way to address ethical issues related to data sharing in the face of ever-changing data gathering and sharing practices. Practical implications – This work is intended to provide a concrete approach for ethical data sharing practices in the domain of Internet security research. Originality/value – The approach presented in this paper is a novel approach combining the insights from: the embedded values concept, value-sensitive design and the approach of the embedded ethicist. (shrink)

The cognitive processing of spatial relations in Euclidean diagrams is central to the diagram-based geometric practice of Euclid's Elements. In this study, we investigate this processing through two dichotomies among spatial relations—metric vs topological and exact vs co-exact—introduced by Manders in his seminal epistemological analysis of Euclid's geometric practice. To this end, we carried out a two-part experiment where participants were asked to judge spatial relations in Euclidean diagrams in a visual half field task design. In the first part, we (...) tested whether the processing of metric vs topological relations yielded the same hemispheric specialization as the processing of coordinate vs categorical relations. In the second part, we investigated the specific performance patterns for the processing of five pairs of exact/co-exact relations, where stimuli for the co-exact relations were divided into three categories depending on their distance from the exact case. Regarding the processing of metric vs topological relations, hemispheric differences were found for only a few of the stimuli used, which may indicate that other processing mechanisms might be at play. Regarding the processing of exact vs co-exact relations, results show that the level of agreement among participants in judging co-exact relations decreases with the distance from the exact case, and this for the five pairs of exact/co-exact relations tested. The philosophical implications of these empirical findings for the epistemological analysis of Euclid's diagram-based geometric practice are spelled out and discussed. (shrink)

We identify two aspects of the problem of maintaining perceptual stability despite an observer's eye movements. The first, visual direction constancy, is the (egocentric) stability of apparent positions of objects in the visual world relative to the perceiver. The second, visual position constancy, is the (exocentric) stability of positions of objects relative to each other. We analyze the constancy of visual direction despite saccadic eye movements.Three information sources have been proposed to enable the visual system to achieve stability: the structure (...) of the visual field, proprioceptive inflow, and a copy of neural efference or outflow to the extraocular muscles. None of these sources by itself provides adequate information to achieve visual direction constancy; present evidence indicates that all three are used.Our final question concerns how information processing operations result in a stable world. The three traditionally suggested means have been elimination, translation, or evaluation. All are rejected. From a review of the physiological and psychological evidence we conclude that no subtraction, compensation, or evaluation need take place. The problem for which these solutions were developed turns out to be a false one. We propose a “calibration” solution: correct spatiotopic positions are calculated anew for each fixation. Inflow, outflow, and retinal sources are used in this calculation: saccadic suppression of displacement bridges the errors between these sources and the actual extent of movement. (shrink)

Politiek gaat over het verenigen van gemeenschappelijke en conflicterende belangen in bindende collectieve besluitvorming op een wijze die door winnaars en verliezers kan worden aanvaard. In dit artikel baseer ik mij op het politiek gezaghebbende duurzaamheidsconcept van de Brundtlandcommissie in Our Common Future: ‘Duurzame ontwikkeling is ontwikkeling die tegemoetkomt aan de behoeften in het heden zonder de mogelijkheid van toekomstige generaties om te voorzien in hun eigen behoeften in de weg te staan’ . Dan blijkt direct dat het vinden (...) van principes voor een duurzame politiek lastig is, want het gaat hier om een morele eis rekening te houden met de belangen van mensen in komende generaties die nu nog geen deel uitmaken van een politieke gemeenschap. (shrink)

Door de Franse filosoof Maurice Blanchot geïnspireerd pleidooi voor de ritualisering van het denken.

Vrijheid van kunst betekent dat de maker vrij is om de kunst te maken die hij wil. Hij is degene die bepaalt wat hij maakt en hoe hij het gemaakte naar buiten brengt. Het publiek kan verschillend op de naar buiten gebrachte kunst reageren en kan eventueel de kunstenaar vragen verantwoording af te leggen. Een kunstenaar kan op dit verzoek ingaan, al hoeft dat in verreweg de meeste gevallen niet. Het afleggen van verantwoording beperkt de vrijheid van kunst echter niet. (...) Zij staat voor de dialoog die door kunstenaars zelf in bepaalde gevallen wordt gezocht, met name als het gaat om geëngageerde kunst. (shrink)

It is common to posit a clear opposition between the values served by property systems and the value of the environment. To give the environment its due, this view holds, the role of private property needs to be limited. Support for this has been said to be found in Locke’s famous ‘enough and as good’ proviso. This article shows that this opposition is mistaken, and corrects the implied reading of Locke’s proviso. In reality, there is no opposition between property and (...) the environment. This is shown using Locke’s theory of appropriation, as well as the real-life case of instream water appropriation. (shrink)

While having a breast reconstruction, women have certain expectations about their future breasted bodies. The aim of this paper is to describe and analyze these expectations in the process of reconstruction. By applying a qualitative, phenomenological study within a longitudinal research design, this paper acknowledges the temporarily complex, contextualized, embodied, and subjective nature of the phenomenon of expectations. The analysis identified expectations regarding three different aspects of women’s embodiment: their gazed body, their capable/practical body, and their felt body. After reconstruction, (...) these women try to reconfigure—adjust, level or retrospectively rewrite—their expectations. Further, some women face what apparently arrives totally unexpected, namely a strange feeling breast or a failed reconstruction. The development of these women’s expectations can be understood as an active, continuously evolving, difficult and sometimes impossible dynamic of expecting the surprise that is a breast reconstruction. Within this dynamic, women formulate and reconfigure—by definition—unrealistic expectations and validate and try to achieve unexpected futures. We suggest that medical professionals can facilitate this dynamic in various ways. (shrink)

Iris van der Tuin redirects the notion of generational logic in feminism away from its simplistic conception as conflict towards a more nuanced conception of the methodology's useful structures. Experimenting with generational logic as an impetus for a new materialism, this book advances feminist politics for the twenty-first century.

State legitimacy is often said to have two aspects: an internal and an external one. Internally, a legitimate state has the right to rule over its subjects. Externally, it has a right that outsiders not interfere with its domestic governance. But what is the relation between these two aspects? In this paper, I defend a conception of legitimacy according to which these two aspects are related in an importantly asymmetrical manner. In particular, a legitimate state’s external right to rule affords (...) it protections that include and go beyond what its internal right to rule enables it to do. This asymmetrical view, I argue, is preferable to its two main rivals: the view that a state’s internal and external legitimacy are separate issues, and the view that internal and external legitimacy are mirroring. (shrink)

ABSTRACT The traditional view holds that political philosophy should aim at the truth. By contrast, Avner de Shalit argues that political philosophers should do something different. According to him, they should work in direct consultation with “the people” in order to think through their theories about political institutions. This article defends the traditional aim of truth-seeking and shows the mistakes in De Shalit’s alternative approach.

A single global authority is not sufficient to regulate heterogenous agents in multiagent systems based on distributed architectures, due to idiosyncratic local situations and to the need to regulate new issues as soon as they arise. On the one hand institutions should be structured as normative systems with a hierarchy of authorities able to cope with the dynamics of local situations, but on the other hand higher authorities should be able to delimit the autonomy of lower authorities to issue valid (...) norms. In this paper, we study the interplay of obligations and strong permissions in the context of hierarchies of authorities using input/output logic, because its explicit norm base facilitates reasoning about norm base maintenance, and it covers a variety of conditional obligations and permissions. We combine the logic with constraints, priorities and hierarchies of authorities. In this setting, we observe that Makinson and van der Torre’s notion of prohibition immunity for permissions is no longer sufficient, and we introduce a new notion of permission as exception and a new distinction between static and dynamic norms. We show how strong permissions can dynamically change an institution by adding exceptions to obligations, provide an explicit representation of what is permitted to the subjects of the normative system and allow higher level authorities to limit the power of lower level authorities to change the normative system. (shrink)

This article provides an affirmative feminist reading of the philosophy of Henri Bergson by reading it through the work of Karen Barad. Adopting such a diffractive reading strategy enables feminist philosophy to move beyond discarding Bergson for his apparent phallocentrism. Feminist philosophy finds itself double bound when it critiques a philosophy for being phallocentric, because the setup of a master narrative comes into being with the critique. By negating a gender-blind or sexist philosophy, feminist philosophy only reaffirms its parameters, and (...) setting up a master narrative costs feminist philosophy its feminism. I thus propose and practice a different methodological starting point, one that capitalizes on "diffraction." This article experiments with the affirmative phase in feminist philosophy prophesied by Elizabeth Grosz, among others. Working along the lines of the diffractive method, the article at the same time proposes a new reading of Bergson (as well as of Barad), a new, different metaphysics indeed, which can be specified as onto-epistemological or "new materialist.". (shrink)

This paper argues, first, that biological evolution can be both random and divinely guided at the same time. Next it discusses the idea that the claim that evolution is unguided is not part of the science of evolution, and defends it against a number of objections.

In the interview in this article, Randall Collins discusses various aspects of his oeuvre. First, he considers why interaction rituals (IRs) in religion are special emotional transformers. This is followed by a discussion of IRs in the digital age and the symbolic and economic power that is required to orchestrate IRs in politics and revolutions. Then comes a discussion of social scientific research into violence, in the past and more recently. The interview continues with a reflection on the notion of (...) attention space, a concept which Collins has applied in analyses of violent interactions and the intellectual struggles between philosophers. Finally, the article considers the state of the art of sociology and its future prospects, evaluating its potential for rapid discovery and its position on the abstraction-reflexivity continuum. As the interview demonstrates Collins’s insightful sociological craftsmanship, it provides social scientists with a strong and optimistic lead in how to do social theory. (shrink)

‘Homophobia’ is shorthand for stigmatising attitudes and practices towards people who demonstrate sexual diversity. In this article, we reflect on how African Christian faith may become redemptive rather than violent in the context of lesbian, gay, bisexual, transgender and intersex forms of sexuality.

This paper examines the increasingly popular view that new insights from the science of subjective well-being (SSWB) should play a prominent role in the determination of public policy. Though there are instrumental reasons for caring about societal happiness too, these political aspirations of the SSWB appear to be mostly intrinsically motivated. As the intrinsic value of happiness is endorsed across the political happiness as a fitting response to the state of the world, authenticity, and merit – it is shown that (...) different views of the conditionality of the intrinsic value of happiness have widely diverging policy implications, which greatly undermines the political aspirations of the SSWB. (shrink)

The body plays an important role in the book of Job - as do animals. According to psychoanalytical specifically object-relations theory, a subjective body image was partly constructed through the internalisation of external stimuli from significant others who mirrored the subject through their feedback or through their own bodies, which served as an ideal or critique to the subject. Amongst the external stimuli, animals constitute such significant others. Animals could therefore have impacted Job's subjective body image, particularly as their bodies (...) were described in detail by God as a response to Job's complaints and searching. CONTRIBUTION: Two theoretical and interrelated problems were acknowledged although they cannot be satisfactorily solved: the cultural aspect of the body image and the relationship to animals. (shrink)