Participants watched themselves in a mirror while another person behind them, hidden from view, extended hands forward on each side where participants’ hands would normally appear. The hands performed a series of movements. When participants could hear instructions previewing each movement, they reported an enhanced feeling of controlling the hands. Hearing instructions for the movements also enhanced skin conductance responses when a rubber band was snapped on the other’s wrist after the movements. Such vicarious agency was not felt (...) when the instructions followed the movements, and participants’ own covert movement mimicry was not essential to the influence of previews on reported control. (shrink)

Social learning plays a prominent role in shaping individual preferences. The vicarious approach-avoidance effect consists of developing a preference for attitudinal objects that have been approached over objects that have been avoided by another person (model). In two experiments (N = 448 participants), we explored how the vicarious approach-avoidance effect is affected by agency (model’s voluntary choice) and identification with the model. The results consistently revealed vicarious approach-avoidance effects in preference, as indicated by the semantic differential (...) and the Implicit Association Test. Agency increased the size of the preference assessed through the semantic differential but did not significantly impact preference in the Implicit Association Test. Identification with the model had no significant impact on the vicarious approach-avoidance effect. Theoretical and practical implications of the results are discussed. (shrink)

As we have seen in the cases of Serbia and Israel, collectives can be mobilised to perpetrate grave wrongs on the basis of patently ideological claims about the harms they have suffered. This article seeks a theoretical understanding of this troubling phenomenon. It does so, first, by contrasting mobilisation based on vicarious victimhood with revenge. The groups in question do not exhibit the contact with reality and clear sense of agency that are prerequisites for revenge. However, these evasions (...) of agency and reality are not specific to group identities centred on victimhood. Second, therefore, the article considers the attractions of such an identity and how it reinforces groups’ tendencies to myth-making and irresponsibility. Among its more harmful effects, it obscures the realities of state power and forecloses meaningful accountability to those outside the group. It also sets in train a vicious circle, whereby the group discovers perverse incentives to harm others – and to harm itself. Yet these harms only reinforce the group’s self-anointed status as victim: as always done by, never doing to. (shrink)

While environmental ethicists often critique metaphors of nature, they rarely recognize metaphors of environmental practice, and so fail to submit background models of human agency to similar critique. In consequence, descriptions of nature are often shaped by unassessed metaphors of practice, and then made to bear argument for that preferred model. To relieve arguments over “nature” of this vicarious burden, models of agency can and should become a primary topic within the field. In response to some initial (...) misgivings from Eric Katz and taking suggestions from Bryan Norton, Steven Vogel, Holmes Rolston, III, and others, some minimal framing criteria can be developed to promote and facilitate a broad debate over the most appropriate metaphors and models of environmental practice. (shrink)

While environmental ethicists often critique metaphors of nature, they rarely recognize metaphors of environmental practice, and so fail to submit background models of human agency to similar critique. In consequence, descriptions of nature are often shaped by unassessed metaphors of practice, and then made to bear argument for that preferred model. To relieve arguments over “nature” of this vicarious burden, models of agency can and should become a primary topic within the field. In response to some initial (...) misgivings from Eric Katz and taking suggestions from Bryan Norton, Steven Vogel, Holmes Rolston, III, and others, some minimal framing criteria can be developed to promote and facilitate a broad debate over the most appropriate metaphors and models of environmental practice. (shrink)

The literature on collective action largely ignores the constraints that moral principle places on action-prompting intentions. Here I suggest that neither individualism nor holism can account for the generality of intentional contents demanded by universalizability principles, respect for persons, or proactive altruism. Utilitarian and communitarian ethics are criticized for nominalism with respect to social intentions. The failure of individualism and holism as grounds for moral theory is confirmed by comparing Tuomela's reductivist analysis of we-intentions with Gilbert's analysis of social facts. (...) Tuomela's account founders over intentions to cooperate, and Gilbert's cannot accommodate legitimate authority, vicarious agency, or group structure. (shrink)

This paper identifies a distinctive kind of moral luck, deep circumstantial luck and then explores its effects on moral responsibility. A key feature of the phenomenon is that it is recurrent rather than one-off. It also affects agents across a wide range of situations making it difficult to detect. Deeply unlucky agents are subject to unfavourable moral assessments through no fault of their own both in specific cases and when they try to respond to such initial assessments. In this respect, (...) deep circumstantial luck takes the form of a normative burden that grows over time. A process-oriented conception of moral responsibility as answerability is proposed to explain this phenomenon and highlight its implications for rethinking vicarious responsibility. (shrink)

When a computer system causes harm, who is responsible? This question has renewed significance given the proliferation of autonomous systems enabled by modern artificial intelligence techniques. At the root of this problem is a philosophical difficulty known in the literature as the responsibility gap. That is to say, because of the causal distance between the designers of autonomous systems and the eventual outcomes of those systems, the dilution of agency within the large and complex teams that design autonomous systems, (...) and the impossibility of fully predicting how autonomous systems will behave once deployed, determining who is morally responsible for harms caused by autonomous systems is unclear at a conceptual level. I review past work on this topic, criticizing prior works for suggesting workarounds rather than philosophical answers to the conceptual problem presented by the responsibility gap. The view I develop, drawing on my earlier work on vicarious moral responsibility, explains why computing professionals are ethically required to take responsibility for the systems they design, despite not being blameworthy for the harms these systems may cause. (shrink)

In cases of complicity in one’s own unfreedom and in structural injustice, it initially appears that agents are only vicariously responsible for their complicity because of the roles circumstantial and constitutive luck play in bringing about their complicity. By drawing on work from the phenomenological tradition, this paper rejects this conclusion and argues for a new responsive sense of agency and responsibility in cases of complicity. Highlighting the explanatory role of stubbornness in cases of complicity, it is argued that (...) although agents may only be vicariously responsible for becoming complicit, they can be held more directly responsible for entrenching their complicity. The complicit agent is responsible for their complicity to the extent that they fail to take responsibility for it. (shrink)

This paper considers whether we have any reason to forgive the perpetrators of the most terrible atrocities, such as the Holocaust. On the face of it, we do not have reason to forgive in such cases. But on examination, the principal arguments against forgiveness do not turn out to be persuasive. Two considerations in favour of forgiveness are canvassed: the presence of rational agency in the perpetrators, and the common human nature which they share with us. It is argued (...) that the presence of rational agency does not generate a reason to forgive. However, our common human nature may be sufficient to provide such a reason, and evidence for its general reason-giving power can be seen in phenomena such as vicarious shame, and the moral significance which we attach to the notion of crimes against humanity. A reason for forgiveness based on common human nature will not be a strong one, but a weak reason still has some force. (shrink)

There is a widely accepted distinction between being directly responsible for a wrongdoing versus being somehow indirectly or vicariously responsible for the wrongdoing of another person or collective. Often this is couched in analyses of complicity, and complicity’s role in the relationship between individual and collective wrongdoing. Complicity is important because, inter alia, it allows us to make sense of individuals who may be blameless or blameworthy to a relatively low degree for their immediate conduct, but are nevertheless blameworthy to (...) a higher degree for their implication in some larger (or another person’s) wrongdoing. In this paper, I argue that there is a distinctively epistemic kind of complicity. First, I motivate the distinction between direct and vicarious responsibility with three interlocking arguments, respectively appealing to: i) the structure of rational agency; ii) linguistic considerations; iii) the role of “principal vs. accomplice” in legal doctrine. I show how these arguments naturally extend to the epistemic domain, motivating an epistemic form of vicarious responsibility. I then examine complicity as a mechanism of vicarious epistemic responsibility. To fill this out, I engage with an epistemic analogue of the debate about the role of intention versus causal contribution in complicity. I propose a Casual Account of Epistemic Complicity, arguing that it accommodates a wide range of cases, and enables fine-grained explanations of degrees of culpability for epistemic complicity. With an adequate account of epistemic complicity on hand, we can explain what is objectionable about an important class of epistemic agent who, on an individual level, may be epistemically blameless or blameworthy to a relatively low degree, but whose relation to other individuals or collectives nevertheless makes them epistemically blameworthy to a higher degree. I explore some broader implications of this result. (shrink)

One of the pleasures available from Hollywood movies comes from the way they set up at least one character for us to identify with and live vicariously through for a couple of hours. Suspense thrillers ask us to ally ourselves with the protagonist and then get our pleasure, a bit perversely perhaps, from the fact that we cannot be active in that role. No matter how painfully we might squirm at the sights and sounds of the story onscreen, we cannot (...) affect the preset outcome of the filmed events. Most of the time, however, we know we are safe in our helpless position because the protagonist will triumph by the film�s end without our assistance. At worst we can come away from this experience with a na�ve or cynical catharsis about things "turning out okay" despite the feelings of disconnection and powerlessness that many of us experience in the world outside the theater. If one�s lack of agency is more physical than mental/emotional, then this experience might provide genuine psychic relief from that condition. Better still, for those of us with our agency more or less intact both physically and mentally, the path the protagonist follows to his or her happy ending can provide us with insight into changing our own lives. (shrink)

The philosophical analysis of trauma has grown over the last ten years due to our need to elucidate the lived experience endured by an increasing number of human beings undergoing forced migration, abuses, war crimes, and traumatizing situations. The irreducibility of trauma renders the task of care ethics more and more difficult. Yet, this paper argues that a phenomenological analysis of the care relation with traumatized patients can help elucidate the inter-affective dynamics at stake in such encounters. First, I will (...) analyze the phenomenon of compassion fatigue and show how it differs from “emotional contagion” and how it relates to empathy. Relying on phenomenological approaches to empathy, I will assess the kind of “affective sharing” entailed by compassion fatigue. In the second section, I will reframe this conception of empathy by uncovering the existential feeling of vulnerability and the pre-reflective bodily resonance that frames our encounter with others. In the final section, I will argue that vicarious traumatization could be overcome thanks to a “creative kind” of compassion which links the sense of self to the sense of agency, the act of caring with the quest for justice, in a constant effort to restore balance through affective sharing and mutual recognition. (shrink)

The free market theory has as its basis the assumption of equity. This equity is ascribed to both purchasers and providers in a perfectly balanced system so that there are seen to be no 'winners' or 'losers' in the market-place. The health system that is developing in the UK is structured as a managed market, but agency relationships between GPs and health authorities buffer the costing process of goods and therefore may be described as distorting the price. This could (...) also be distorting the ability of the users, who are the real purchasers, from exercising their economic freedom. They may also lose the autonomy to choose goods that suit their particular needs, and equally not to choose those services that they do not want or wish to pay for vicariously (i.e. that the common good is respected by both providers and purchasers). This assumes that users of the service know the level of choice that they have and that not only are providers protected at present by the practices of the purchasers but also entry into the market for new providers is severely curtailed. The exercise of true freedom of the market in economic terms is one of moral obliga tion to provide services that not only have a market value that is affordable and a require ment of the 'common good' but also are historically acceptable for social requirements (i.e. that the services are valued as fundamental tenets of the rights of individuals in soci ety). The expression of this need will therefore be utilitarian (i.e. the users of the services should benefit from them rather than the providers). (shrink)

The risk of tort liability for health maintenance organizations and other managed care plans has dramatically increased in recent years. This is due in part to the growing percentage of health care rendered through managed care plans. The cost-containment mechanisms commonly used by managed care plans, such as limiting access to services and/or choice of providers, creates a climate ripe for disputes that may end up in court. As dissatisfied patients and providers seek recourse in the courts, tort doctrines are (...) extended and new legal theories emerge as needed. For example, the concepts of direct and vicarious tort liability developed in the hospital context have been extended by courts to encompass HMOs. vicarious liability claims, based on ostensible agency or respondeat superior doctrines, have been brought against HMOs and managed care plans for negligent treatment by physicians selected to provide care to members. (shrink)

The risk of tort liability for health maintenance organizations and other managed care plans has dramatically increased in recent years. This is due in part to the growing percentage of health care rendered through managed care plans. The cost-containment mechanisms commonly used by managed care plans, such as limiting access to services and/or choice of providers, creates a climate ripe for disputes that may end up in court. As dissatisfied patients and providers seek recourse in the courts, tort doctrines are (...) extended and new legal theories emerge as needed. For example, the concepts of direct and vicarious tort liability developed in the hospital context have been extended by courts to encompass HMOs. vicarious liability claims, based on ostensible agency or respondeat superior doctrines, have been brought against HMOs and managed care plans for negligent treatment by physicians selected to provide care to members. (shrink)

In the evolution of the vertebrates and probably a few other animals (Metazoa), biological values have been translated (subjectivized) into affective experience that necessarily involves the consciousness of external objects/events (as different from one’s body), which is tantamount to the origins of subjectivity. Mammals, birds and other vertebrates are experiencing subjects even though their negative and positive experience greatly vary in scope. Some mammals are capable of vicarious experience and may act as empathic agents, and some of them, at (...) least the great apes, use true reflective self-consciousness and thus perceive themselves as agents, which generates attributive feelings. The balance of positive and negative experience determines the intrinsic value of (an individual) life. Every subjective life is autotelic in striving to maximize this balance. A subjective life may also have a social value that is measured in terms of the impact on intrinsic values of other lives. The social value of life is contingent upon an agency, that is, conscious intentional actions that impact intrinsic value of other lives. The difference between the social value of a subjective life and an instrumental value of an individual comes down to the difference between agent causation and event causation. The moral agency refers to a subcategory of agent causation that involves the awareness of impact on another subject’s wellbeing (interests). The moral agency is at present known only in the hominids (including the chimpanzees) which understand causality and use reflective self-consciousness, which in turn enables them to perceive themselves as agents and attribute to themselves responsibility. The moral agency originated as a motivational mechanism of reciprocity execution , and thus as an adaptation for group life, which is why it favors ingroup members and often promotes norms that harm other groups. The human moral agency is frequently used by third parties to implement group norms that are based on ideologies (religious or secular) and may actually harm both group members and the entire groups. Any received, bioculturally evolved morality is unlikely to be good in either absolute or universal sense. Therefore, the moral capacity alone does not make a human life categorically more valuable, even if human motivation were dominated by moral agency (which is true only of some people). The life of a vertebrate has, therefore, two values, intrinsic and social. Each can be negative or positive, and may vary to a large extent independently of the other, whereby a joint value of a subjective life cannot be sensibly assessed and compared without prior assessments of the intrinsic and social component separately. In the absence of objective reasons to rate the intrinsic value of a human life as categorically higher than that of other mentally advanced mammals, and in consideration of the observed range of social values of human lives, some of which approach zero and some are highly negative (lower than any thinkable negative values of non-human lives), the doctrine of extraordinary and inalienable (innate) human „dignity” is groundless and unethical, as it leads to a depreciation of the lives of non-human subjects, and often preempts the need to impart a real social value to one’s own life. (shrink)

This paper investigates agents’ blameworthiness when they are part of a group that does harm. We analyse three factors that affect the scope of an agent’s blameworthiness in these cases: shared intentionality, interpersonal influence, and common knowledge. Each factor involves circumstantial luck. The more each factor is present, the greater is the scope of each agent’s vicarious blameworthiness for the other agents’ contributions to the harm. We then consider an agent’s degree of blameworthiness, as distinct from her scope of (...) blameworthiness. We suggest that an agent mostly controls her degree of blameworthiness—but even here, luck constrains what possible degrees of blameworthiness are open to her. (shrink)

Graham Harman’s Object-Oriented Ontology has employed a variant of occasionalist causation since 2002, with sensual objects acting as the mediators of causation between real objects. While the mechanism for living beings creating sensual objects is clear, how nonliving objects generate sensual objects is not. This essay sets out an interpretation of occasionalism where the mediating agency of nonliving contact is the virtual particles of nominally empty space. Since living, conscious, real objects need to hold sensual objects as sub-components, but (...) nonliving objects do not, this leads to an explanation of why consciousness, in Object-Oriented Ontology, might be described as doubly withdrawn: a sensual sub-component of a withdrawn real object. (shrink)

This book is a systematic analysis of John R. Searle’s philosophy of mind. Searle’s view of mind, as a set of subjective _and_ biologically embodied processes, can account for our being part of nature _qua_ mindful beings. This model finds support in neuroscience and offers reliable solutions to the problems of consciousness, mental causation, and the self.

In their 2002 seminal paper Hauser, Chomsky and Fitch hypothesize that recursion is the only human-specific and language-specific mechanism of the faculty of language. While debate focused primarily on the meaning of recursion in the hypothesis and on the human-specific and syntax-specific character of recursion, the present work focuses on the claim that recursion is language-specific. We argue that there are recursive structures in the domain of motor intentionality by way of extending John R. Searle’s analysis of intentional action. We (...) then discuss evidence from cognitive science and neuroscience supporting the claim that motor-intentional recursion is language-independent and suggest some explanatory hypotheses: linguistic recursion is embodied in sensory-motor processing; linguistic and motor-intentional recursions are distinct and mutually independent mechanisms. Finally, we propose some reflections about the epistemic status of HCF as presenting an empirically falsifiable hypothesis, and on the possibility of testing recursion in different cognitive domains. (shrink)

This paper investigates if and to what point it is possible to trade on news sentiment and if deep learning, given the current hype on the topic, would be a good tool to do so. DL is built explicitly for dealing with significant amounts of data and performing complex tasks where automatic learning is a necessity. Thanks to its promise to detect complex patterns in a dataset, it may be appealing to those investors that are looking to improve their trading (...) process. Moreover, DL and specifically LSTM seem a good pick from a linguistic perspective too, given its ability to “remember” previous words in a sentence. After having explained how DL models are built, we will use this tool for forecasting the market sentiment using news headlines. The prediction is based on the Dow Jones industrial average by analyzing 25 daily news headlines available between 2008 and 2016, which will then be extended up to 2020. The result will be the indicator used for developing an algorithmic trading strategy. The analysis will be performed on two specific cases that will be pursued over five time-steps and the testing will be developed in real-world scenarios. (shrink)

Dance provides natural conditions for studying relationships between coordination patterns and human experience. von Zimmermann and colleagues investigate whether relatively simple or more complex forms of movement coordination are related to pro‐social experiences during group dance. They find that pro‐social experience depends on the degree to which movement patterns are distributed and diversified, but not the degree to which movement patterns are simply unitary.

When two people move in synchrony, they become more social. Yet it is not clear how this effect scales up to larger numbers of people. Does a group need to move in unison to affiliate, in what we term unitary synchrony; or does affiliation arise from distributed coordination, patterns of coupled movements between individual members of a group? We developed choreographic tasks that manipulated movement synchrony without explicitly instructing groups to move in unison. Wrist accelerometers measured group movement dynamics and (...) we applied cross-recurrence analysis to distinguish the temporal features of emergent unitary synchrony and distributed coordination. Participants’ unitary synchrony did not predict pro-social behavior, but their distributed coordination predicted how much they liked each other, how they felt toward their group, and how much they conformed to each other's opinions. The choreography of affiliation arises from distributed coordination of group movement dynamics. (shrink)

The involvement of developing countries in international clinical trials is necessary for the development of appropriate medicines for local populations. However, the absence of appropriate structures for ethical review represents a barrier for certain countries. Currently there is very little information available on existing structures dedicated to ethics in western and central Africa. This article briefly describes historical milestones in the development of networks dedicated to capacity building in ethical review in these regions and outlines the major conclusions of two (...) workshops on this issue, which were held in September and October 2002 in Libreville, Gabon, and Paris, France. The workshops were the culmination of collaboration between the African Malaria Network Trust (AMANET) and the Pan African Bioethics Initiative (PABIN). They produced an update on ethics organizations with regard to mission, function, activities, members, and contact people, in eight countries within the regions discussed. As a result of the commitment of mandated delegates, a further prominent outcome followed these workshops: the creation of national structures, where none existed before, dedicated to the ethical review of clinical trials. (shrink)

The involvement of developing countries in international clinical trials is necessary for the development of appropriate medicines fo.

Developmental Dyslexia significantly interferes with children’s academic, personal, social, and emotional functioning. Nevertheless, therapeutic options need to be further validated and tested in randomized controlled clinical trials. The use of transcranial direct current stimulation has been gaining ground in recent years as a new intervention option for DD. However, there are still open questions regarding the most suitable tDCS protocol for young people with DD. The current crossover study tested the effectiveness of a short and intensive tDCS protocol, including the (...) long-term effects, as well as the influence of age and neuropsychological processes at baseline on reading improvements. Twenty-four children and adolescents with DD were randomly assigned to receive active tDCS during the first slot and sham tDCS during the second slot or vice versa. Five consecutive daily sessions of left anodal/right cathodal tDCS set at 1 mA for 20 min were administered over the parieto-occipital regions. Reading measures and neuropsychological measures were collected before, immediately after, 1 week and 1 month later the treatment. Our results showed that only the active tDCS condition improved non-word reading speed immediately after and 1 month later the end of the treatment compared with baseline. In addition, the improvement in non-word reading speed was significantly correlated with age and with neuropsychological measures at baseline but only in the active tDCS condition. The current crossover study contributed to enforce previous effects of tDCS, including long-term effects, on non-word reading speed and to understand the effect of age and neuropsychological processes on reading outcomes. Our findings showed that tDCS could be a low-cost and easy-to-implement treatment option with long-term effects for children and adolescents with DD. (shrink)

This study analyzed the relation between mental time travel (MTT) and the ability to produce a storytelling focusing on global coherence, which is one of the most notable characteristics of narrative discourse. As global coherence is strictly tied to the temporal sequence of the events narrated in a story, we hypothesized that the construction of coherent narratives would rely on the ability to mentally navigate in time. To test such a hypothesis, we investigated the relation between one component of MTT—namely, (...) episodic future thinking (EFT)—and narrative production skills by comparing the narratives uttered by 66 children with high-functioning autism spectrum disorder (ASD) with those produced by 66 children with typical development. EFT was assessed by administering a task with minimal narrative demands, whereas storytelling production skills were assessed by administering two narrative production tasks that required children to generate future or past episodes with respect to the target stimuli. The results showed that EFT skills were impaired only in a subgroup of children with ASD and that such subgroup performed significantly worse on the narrative production task than ASD participants with high EFT skills and participants with typical development. The practical and theoretical implications of these findings are discussed. (shrink)

Down syndrome (DS), the most common genetic cause of intellectual disability, results from the partial or complete triplication of chromosome 21. Individuals with DS are impaired at using a high-resolution, allocentric spatial representation to learn and remember discrete locations in a controlled environment. Here, we assessed the capacity of individuals with DS to perform low-resolution spatial learning, depending on two competing memory systems: (1) the place learning system, which depends on the hippocampus and creates flexible relational representations of the environment; (...) and (2) the response learning system, which depends on the striatum and creates fixed stimulus-response representations of behavioral actions. Individuals with DS exhibited a preservation of the low-resolution spatial learning capacities subserved by these two systems. In place learning, although the average performance of individuals with DS was lower than that of typically-developing (TD) mental age-matched children and TD young adults, the number of individuals with DS performing above chance level did not differ from TD children. In response learning, the average performance of individuals with DS was lower than that of TD adults, but it did not differ from that of TD children. Moreover, the number of individuals with DS performing above chance level did not differ from TD adults, and was higher than that of TD children. In sum, whereas low-resolution place learning appears relatively preserved in individuals with DS, response learning appears facilitated. Our findings are consistent with the hypothesis that the neural pathways supporting low-resolution place learning and response learning are relatively preserved in DS. (shrink)

Individuals with Autism spectrum disorders (ASD) have difficulties in the recollection of past experiences (Episodic Memory). Accumulating evidence suggests that they might have also difficulties in the ability to imagine potential future scenarios (Episodic Future Thinking, EFT) and in narrative generation skills. This investigation aimed to determine 1) whether impairments of EFT can be identified in a large cohort of children with high functioning ASD using a task with minimal narrative demands; and 2) if such impairments are related to the (...) ability to generate a narrative's scenario. 77 children with high-functioning ASD and 77 children with typical development were recruited for the study. The two groups were balanced for age, level of formal education, and IQ. EFT was assessed by administering a task with minimal narrative demands, whereas narrative generation skills were assessed with three tasks requiring children to generate past, middle or future episodes in a narrative discourse. With respect to control participants, a subgroup of children with ASD had impaired EFT skills and also showed significant impairments in the ability to generate adequate narratives. On the contrary, participants with spared EFT had normal performance on the narrative generation task. Interestingly, EFT skills predicted narrative generation abilities in both groups. The results of this study support the hypothesis that EFT may be impaired in some but not all children with ASD and of a relation between difficulties with EFT and impairments in the process of narrative generation. The assessment of EFT should employ tasks that do not require narrative production, as children with impaired EFT may also have reduced narrative skills. (shrink)

Williams (WS) and Down (DS) syndromes are neurodevelopmental disorders with distinct genetic origins and different spatial memory profiles. In real-world spatial memory tasks, where spatial information derived from all sensory modalities is available, individuals with DS demonstrate low-resolution spatial learning capacities consistent with their mental age, whereas individuals with WS are severely impaired. However, because WS is associated with severe visuo-constructive processing deficits, it is unclear whether their impairment is due to abnormal visual processing or whether it reflects an inability (...) to build a cognitive map. Here, we tested whether blindfolded individuals with WS or DS, and typically developing (TD) children with similar mental ages, could use path integration to perform an egocentric homing task and return to a starting point. We then evaluated whether they could take shortcuts and navigate along never-traveled trajectories between four objects while blindfolded, thus demonstrating the ability to build a cognitive map. In the homing task, 96% of TD children, 84% of participants with DS and 44% of participants with WS were able to use path integration to return to their starting point consistently. In the cognitive mapping task, 64% of TD children and 74% of participants with DS were able to take shortcuts and use never-traveled trajectories, the hallmark of cognitive mapping ability. In contrast, only one of eighteen participants with WS demonstrated the ability to build a cognitive map. These findings are consistent with the view that hippocampus-dependent spatial learning is severely impacted in WS, whereas it is relatively preserved in DS. (shrink)