We examined nurses’ perceptions of the ethical climate of their workplace and the relationships among the perceptions, medical error experience and intent to leave through a cross-sectional survey of 1826 nurses in 33 Korean public hospitals. Ethical climate was measured using the Hospital Ethical Climate Survey. Although the sampled nurses perceived their workplace ethical climate positively, 19% reported making at least one medical error during the previous year, and 25% intended to leave their jobs in the near future. Controlling for (...) individual and organizational characteristics, we found that nurses with a more positive perception of the ‘patient’ dimension of ethical climate were less likely to have made medical errors. Nurses with a more positive perception of the ‘patient’, ‘manager’, ‘hospital’ and ‘physician’ dimensions of ethical climate were less likely to leave their current job. Enhancing workplace ethical climate could reduce medical errors and improve nurses’ retention in public hospitals. (shrink)

The aim of this paper is twofold. First, we clarify the notion of immunity to error through misidentification with respect to the first-person pronoun. In particular, we set out to dispel the view that for a judgment to be IEM it must contain a token of a certain class of predicates. Rather, the importance of the IEM status of certain judgments is that it teaches us about privileged ways of coming to know about ourselves. We then turn to examine how (...) perception, as a state with nonconceptual content, can give rise to judgments that are IEM. On one view, the ‘inheritance model’ of immunity, perception gives rise to such judgments because perception itself is IEM. We argue that this model is misguided, and, instead, suggest and elucidate an alternative view: perception gives rise to judgments that are IEM by virtue of containing implicitly self-related or self-concerning information. (shrink)

The distinction between true belief and knowledge is one of the most fundamental in philosophy, and a remarkable effort has been dedicated to formulating the conditions on which true belief constitutes knowledge. For decades, much of this epistemological undertaking has been dominated by a single strategy, referred to here as the modal approach. Shared by many of the most widely influential constraints on knowledge, including the sensitivity, safety, and anti-luck/risk conditions, this approach rests on a key underlying assumption — the (...) modal profiles available to known and unknown beliefs are in some way asymmetrical. The first aim of this paper is to deconstruct this assumption, identifying its plausibility with the way in which epistemologists frequently conceptualize human perceptual systems as excluding certain varieties of close error under conditions conducive to knowledge acquisition. The second aim of this paper is to then argue that a neural phase phenomenon indicates that this conceptualization is quite likely mistaken. This argument builds on the previous introduction of this neural phase to the context of epistemology, expanding the use of neural phase cases beyond relatively narrow questions about epistemic luck to a much more expansive critique of the modal approach as a whole. (shrink)

A joint modelling of objective worlds and subjective perceptions within two-dimensional semantics eliminates the margin for error principle and solves the epistemic sorites paradox. Two objective knowledge modalities can be defined in two-dimensional frames accounting for subjective perceptions: “necessary knowledge” (NK) and “possible knowledge” (PK), the latter being better suited to the interpretation of knowledge utterances. Two-dimensional semantics can in some cases be reduced to one-dimensional ones, by defining accessibility relations between objective worlds that reflect subjective perceptions: NK and PK (...) are respectively equivalent to ${\square \square }$ and ${\lozenge \square }$ in some one-dimensional frame, and to ${\square }$ and another modality in some other. (shrink)

Disclosure of near miss medical error (ME) and who should disclose ME to patients continue to be controversial. Further, available recommendations on disclosure of ME have emerged largely in Western culture; their suitability to Islamic/Arabic culture is not known.

Why does aristotle say that the common sensibles are susceptible to error while the specific sensibles are not? various solutions of this problem are discussed and finally it is concluded that aristotle's meaning here is teleological. The specific senses were fashioned by nature to perceive the specific sensibles but not the common sensibles and so error sometimes (often) creeps in. The common sense is really not a sense faculty as the eye, The ear etc.

In the years 1675-84, Leibniz sought to disprove Descartes’s account of clear and distinct perception by implementing a three-step argumentative strategy. The first part of the paper reconstructs the argument and highlights what aspects of Descartes’s epistemology it addresses. The reconstruction shows that the argument is based on conceivability errors. These are a kind of symbolic cognition that prove Descartes’s clear and distinct perception as introspectively indistinguishable from Leibniz’s symbolic cognition. The second part of the paper explores the epistemic (...) implication of the indistinguishability between clear and distinct perception and symbolic cognition: the mind constitutively depends on products of the imagination. My conclusion addresses the role of the imagination in symbolization. Symbolization does not exceed imagination; it rather is an idealized use of cognitive surrogates, like characters, to submit to the imagination what is not subject to it. (shrink)

Among all their sensations, agents need to distinguish between those caused by themselves and those caused by external causes. The ability to infer agency is particularly challenging under conditions of uncertainty. Within the predictive processing framework, this should happen through active control of prediction error that closes the action-perception loop. Here we use a novel, temporally-sensitive, behavioural proxy for prediction error to show that it is minimised most quickly when volatility is high and when participants report agency, regardless of the (...) accuracy of the judgement. We demonstrate broad effects of uncertainty on accuracy of agency judgements, movement, policy selection, and hypothesis switching. Measuring autism traits, we find differences in policy selection, sensitivity to uncertainty and hypothesis switching despite no difference in overall accuracy. (shrink)

Over the centuries the nature of erroneous perception has been thoroughly discussed by Indian philosophers of nearly every school. This text aims to pursue important issues in the discussion of perceptual error. It sheds light on why Indian philosophers devoted so much attention to the problem of erroneous perception but also on why the ontological status of the object of error became such an important issue. The result is a history of the interactions among rival theories of perceptual error.

Errors have been the concern of providers and consumers of health care services. However, consumers' perception of medical errors in developing countries is rarely explored. The aim of this study is to assess community members' perceptions about medical errors and to analyse the factors affecting this perception in one Middle East country, Oman.

Despite the fact that many of our beliefs are justified by perceptual experience, there is relatively little exploration of the connections between epistemic justification and perceptual content. This is unfortunate since it seems likely that some views of justification will require particular views of content, and the package of the two might be quite a bit less attractive than either view considered alone. I will argue that this is the case for epistemic internalism. In particular, epistemic internalism requires a view (...) of perceptual content that results in an error theory of perception. This, in turn, hobbles the internalist’s account of perceptual justification. While there are various stages along the way at which one can resist the argument, each one will involve significant commitments that highlight heretofore unacknowledged connections between justification and content. Even if the internalist is willing to make these moves and resist the argument, the argument reveals a novel way for the epistemic externalist to resist one of internalism’s main arguments. (shrink)

Color relationalism is the view that colors are constituted in terms of relations to perceiving subjects. Among its explanatory virtues, relation- alism provides a satisfying treatment of cases of perceptual variation. But it can seem that relationalists lack resources for saying that a representa- tion of x’s color is erroneous. Surely, though, a theory of color that makes errors of color perception impossible cannot be correct. In this paper I’ll argue that, initial appearances notwithstanding, relationalism contains the resources to (...) account for errors of color perception. I’ll conclude that worries about making room for error are worries the relationalist can meet. (shrink)

This chapter seeks to recover an approach to consciousness from a general theory of brain function, namely the prediction error minimization theory. The way this theory applies to mental and developmental disorder demonstrates its relevance to consciousness. The resulting view is discussed in relation to a contemporary theory of consciousness, namely the idea that conscious perception depends on Bayesian metacognition; this theory is also supported by considerations of psychopathology. This Bayesian theory is first disconnected from the higher-order thought theory, and (...) then, via a prediction error conception of action, connected instead to the global neuronal workspace theory. Considerations of mental and developmental disorder therefore show that a very general theory of brain function is relevant to explaining the structure of conscious perception; furthermore, this theory can subsume and unify two contemporary approaches to consciousness, in a move that seeks to elucidate the fundamental mechanism for selection of representational content into consciousness. (shrink)

In this paper, I seek to build a theoretical framework that explains how effectively different firms can use different types of corporate social responsibility to influence stakeholders perceptions of and reactions to different types of errors. CSR affects the errors stakeholders notice, how they frame them, how they respond to them, and how quickly any punishment wanes. Ex ante and ex post CSR decrease the likelihood that stakeholders will notice some errors, improve the framing of those (...) class='Hi'>errors that are noticed, and decrease the magnitude and duration of stakeholder attacks sparked by those errors. (shrink)

The present paper argues that Merleau-Ponty’s notion of Flesh/reversibility intellectually is significantly flawed, and leads phenomenology into something of a dead end. This is shown through the following strategy. First Merleau-Ponty’s account of originary perception and his critique of the reflective attitude are expounded. They are shown to culminate in rejection of the subject-object relation as an ontological fundamental in favour of a ‘hyper-reflective method’. A critique of Merleau-Ponty’s position is then offered. It argues that originary perception is not logically (...) prior to reflective thought, and that Merleau-Ponty fails to do justice to the scope of the subject-object relation. Specifically, he overlooks the way in which the relation is the basis of our practical perceptual orientation. It is then shown how this relation actually pervades Merleau-Ponty’s own all-important ‘hyper-reflective’ alternative – the notion of ‘Flesh’. Possible counter-arguments are considered and refuted. The.. (shrink)

Affective realism, roughly the hypothesis that you “perceive what you feel”, has recently been put forward as a novel, empirically-backed explanation of police shooting errors. The affective states involved in policing in high-pressure situations result in police officers literally seeing guns even when none are present. The aim of this paper is to (i) unpack the implications of this explanation for assessing police culpability and (ii) determine whether we should take these implications at face value. I argue that while (...) affective realism stands to diminish, if not eliminate, the moral and legal responsibilities of officers who have made shooting errors, the empirical data itself does not directly support such a radical rethink of police culpability. (shrink)

Perception of the external world is an essential part of the animal (including human) life, both as a source of knowledge and as a way to survive. Medieval authors accepted this view, and despite general concerns about the reliability of the senses in the acquisition of certain and objective knowledge, they thought that for the most part our perceptual system gets things right when it comes to the perceptual features of things—but not always. Our article focuses on thirteenth- and fourteenth-century (...) philosophical discussions of illusions and other types of perceptual errors. Reception of incorrect information, misjudgments concerning perceptual objects, the binding problem, and similar cases that explain perceptual errors will be analyzed. We discuss what might be called medieval Aristotelian/Avicennian theories of perception and the internal senses (drawing mainly from Albertus Magnus and Thomas Aquinas), as well as the so-called perspectivist accounts of perception, especially that by Alhacen. Finally, we take up a debate between Peter Auriol and his critics, which contains elements that can be seen as precursors of later skeptical worries. The concern here is that, just like in contemporary discussions leading to disjunctivism, the absence of a secure way to distinguish between veridical and non-veridical perception leads to a general worry about the reliability of our experience of the world. (shrink)

The definition and measurement of the quality audit work has been the subject of many studies. Since the quality of auditors' work could not be observed directly except in ex post audit failures, prior researches adapted different proxies for measuring it. These proxies include firm size, reputation, auditor tenure, audit fees and other measures. This article reviews empirical studies over the past decades from all over the world in order to assess what researchers have done about measuring the quality of (...) auditors' work. Prior measurements are classified into two main groups; direct and indirect measure of quality audit and actual quality audit versus perceptions. This article contributes to the quality audit literature by proposing new measurement, which is developed based on the quality of auditors' work definition and theory of planned behaviour. (shrink)

Perception can’t have disjunctive content. Whereas you can think that a box is blue or red, you can’t see a box as being blue or red. Based on this fact, I develop a new problem for the ambitious predictive processing theory, on which the brain is a machine for minimizing prediction error, which approximately implements Bayesian inference. I describe a simple case of updating a disjunctive belief given perceptual experience of one of the disjuncts, in which Bayesian inference and predictive (...) coding pull in opposite directions, with the former implying that one’s confidence in the belief should increase, and the latter implying that it should decrease. Thus, predictive coding fails to approximately implement Bayesian inference across the interface between belief and perception. (shrink)

Our perception of where touch occurs on our skin shapes our interactions with the world. Most accounts of cutaneous localisation emphasise spatial transformations from a skin-based reference frame into body-centred and external egocentric coordinates. We investigated another possible method of tactile localisation based on an intrinsic perception of ‘skin space’. The arrangement of cutaneous receptive fields (RFs) could allow one to track a stimulus as it moves across the skin, similarly to the way animals navigate using path integration. We applied (...) curved tactile motions to the hands of human volunteers. Participants identified the location midway between the start and end points of each motion path. Their bisection judgements were systematically biased towards the integrated motion path, consistent with the characteristic inward error that occurs in navigation by path integration. We thus showed that integration of continuous sensory inputs across several tactile RFs provides an intrinsic mechanism for spatial perception. (shrink)

PurposeThis study investigated the impact of age and myopia on visual form perception among Chinese school-age children.MethodsThis cross-sectional study included 1,074 students with a mean age of 12.1 ± 4.7 years. The mean spherical equivalence refraction of the participants was −1.45 ± 2.07 D. All participants underwent distance visual acuity, refraction measurement and local and global visual form perception test including orientation, parallelism, collinearity, holes and color discrimination tasks.ResultsThe reaction times of emmetropes were slower than those of myopic and high (...) myopic groups on both local and global discrimination tasks. A reduction in reaction times was found with increasing age on both local and global discrimination tasks. Age was significantly associated with both local and global visual perception performance after adjusting for gender, visual acuity and SER.ConclusionsThis study revealed that both local and global visual perception improve with age among Chinese children and that myopes seem to have better visual perception than emmetropes. (shrink)

Errors of judgment regarding pain sensations are not possible. Christopher Hill, in his paper ‘Introspective Awareness of Sensations’, argues that we do sometimes commit ‘errors of judgment’ and he draws on an example that involves the perception of pain to illustrate his point. I analyze Hill’s example and draw on other examples of pain sensations to show how errors of judgment are not possible. I argue that pain sensations appear to be causally shaped and in some cases (...) generated solely by beliefs, expectations and dispositional states. Changes in beliefs, expectations and dispositional states appear to change the sensation that is generated. If pain sensations are generated in the way that I suggest, then the fact that some of the influences that causally shape and generate a pain sensation are constantly subject to change means that there may be little ‘truth’ that can be objectively established regarding a belief about a pain sensation. If there is little ‘truth’ that can be objectively established about a pain sensation, it will be inaccurate to label an instance of pain avowal as an ‘error of judgment’, or to speak about judgments concerning pain in terms of truth or error more generally. (shrink)

With the advent of the severe acute respiratory syndrome-Corona Virus type 2 pandemic, the theme of emotion recognition from facial expressions has become highly relevant due to the widespread use of face masks as one of the main devices imposed to counter the spread of the virus. Unsurprisingly, several studies published in the last 2 years have shown that accuracy in the recognition of basic emotions expressed by faces wearing masks is reduced. However, less is known about the impact that (...) wearing face masks has on the ability to recognize emotions from subtle expressions. Furthermore, even less is known regarding the role of interindividual differences in emotion processing. This study investigated the perception of all the six basic emotions, both as a function of the face mask and as a function of the facial expressions’ intensity in terms of participants’ uncertainty in their responses, misattribution errors, and perceived intensity. The experiment was conducted online on a large sample of participants. Participants completed the 20-item Toronto Alexithymia Scale and the Autistic Spectrum Quotient and then performed an emotion-recognition task that involved face stimuli wearing a mask or not, and displaying full or subtle expressions. Each face stimulus was presented alongside the Geneva Emotion Wheel, and participants had to indicate what emotion they believed the other person was feeling and its intensity using the GEW. For each combination of our variables, we computed the indices of ‘uncertainty’, ‘bias’, and ‘perceived intensity’. We found that face masks increase uncertainty for all facial expressions of emotion, except for fear when intense, and that disgust was systematically confused with anger. Furthermore, when faces were covered by the mask, all the emotions were perceived as less intense, and this was particularly evident for subtle expressions. Finally, we did not find any evidence of a relationship between these indices and alexithymic/autistic traits. (shrink)

Disclosure of medical and errors to patients has been increasingly mandated in the U. S. and Canada. Thus, some health systems are developing formal disclosure policies. The present study examines how disclosure training may impact staff and the organization. We argue that organizations that support "disclose and apologize" activities, as opposed to "deny and defend," are demonstrating values-based ethics. Specifically, we hypothesized that when health care clinicians are trained and supported in error disclosure, this may signal a valuesbased ethical (...) environment, and staff may be more committed to the organization. We surveyed 325 clinical care providers employed by a large hospital that had recently begun implementing disclosure policies and training. Disclosure training explained significant variance in perceptions of the ethical environment, and the ethical environment mediated the relationship between disclosure training and organizational commitment. Although this study explored disclosure of medical errors, organizational support for error disclosure is a concept that could be relevant for many types of organizations. (shrink)

The Problem of Perception is a pervasive and traditional problem about our ordinary conception of perceptual experience. The problem is created by the phenomena of perceptual illusion and hallucination: if these kinds of error are possible, how can perceptual experience be what we ordinarily understand it to be: something that enables direct perception of the world? These possibilities of error challenge the intelligibility of our ordinary conception of perceptual experience; the major theories of experience are responses to this challenge.

►JOHN CORCORAN AND IDRIS SAMAWI HAMID, Two-method errors: having it both ways. Philosophy, University at Buffalo, Buffalo, NY 14260-4150, USA E-mail: [email protected] Philosophy, Colorado State University, Fort Collins, CO 80523-1781 USA E-mail: [email protected] Where two methods produce similar results, mixing the two sometimes creates errors we call two-method errors, TMEs: in style, syntax, semantics, pragmatics, implicature, logic, or action. This lecture analyzes examples found in technical and in non-technical contexts. One can say “Abe knows whether Ben draws” (...) in two other ways: ‘Abe knows whether or not Ben draws’ or ‘Abe knows whether Ben draws or not’. But a stylistic TME occurs in ‘Abe knows whether or not Ben draws or not’. One can say “Abe knows how Ben looks” using ‘Abe knows what Ben looks like’. But syntactical TMEs are in ‘Abe knows what Ben looks’ and in ‘Abe knows how Ben looks like’. One can deny that Abe knows Ben by prefixing ‘It isn’t that’ or by interpolating ‘doesn’t’. But a pragmatic TME occurs in trying to deny that Abe knows Ben by using ‘It isn’t that Abe doesn’t know Ben’. There are several standard ways of defining truth using sequences. Quine’s discussions in the 1970 first printing of Philosophy of logic [3] and in previous lectures were vitiated by mixing two [1, p. 98]. The logical TME in [3], which eluded Quine’s colleagues, was corrected in the 1978 sixth printing [2]. But Quine never explicitly acknowledged, described, or even mentioned the error. This lecture presents and analyses two-method errors in the logic literature. [1] JOHN CORCORAN, Review of Quine’s 1970 Philosophy of Logic. In Philosophy of Science, vol. 39 (1972), pp. 97–99. [2] JOHN CORCORAN, Review of sixth printing of Quine’s 1970 Philosophy of Logic. In Mathematical Reviews MR0469684 (1979): 57 #9465. [3] WILLARD VAN ORMAN QUINE, Philosophy of logic, Harvard, 1970/1986. (shrink)

The procurement decision-making process for complex military product systems (CoPS) has significant implications for military end-users, suppliers, and exchequers. This study examines the usefulness of adopting a fast and frugal decision-making approach for the acquisition of military CoPS. Defence procurement environment is complex. On the one hand, there are uncertainties and severe resource constraints due to regularly changing threat perceptions, limited flow of information about new technologies, and the growing demand to reduce defence related expenses. On the other hand, several (...) stakeholders remain pre-occupied with the demand for ‘zero-error’ technologies. In such a setting, recurrent cost overruns and delays in supply are common in defence procurement programmes, across countries. Taking the illustrative examples of the missile system, fighter jet, and radar system acquisitions in India, we elucidate on ‘optimising’ versus ‘satisficing’ dynamics in the procurement decisions. The paper argues that a fast and frugal decision-making process by relying on judgement, experiential knowledge, and intuitive learning might make procurement processes, adaptively, more efficient. Such an approach would enable a ‘good enough’ technology to be inducted, and improved upon, through regular feedback from the actual environment. The study has implications for policy scholarships on innovation policy instruments under uncertainty. (shrink)

Claude Romano and Andrea Staiti have recently discussed Husserl’s account of perception in relation to debates in current analytic philosophy between so-called “conjunctivists” and “disjunctivists”. Romano and Staiti offer strikingly different accounts of the nature of illusion and hallucination, and opposing readings of Husserl. Romano thinks hallucinations and illusions are fleeting, fragile phenomena, while Staiti claims they are inherently retrospective phenomena. Romano reads Husserl as being committed to a form of conjunctivism that Romano rejects in favour of a version of (...) disjunctivism. Staiti, by contrast, claims that, from a Husserlian viewpoint, conjunctivism and disjunctivism are equally untenable. I suggest that both Romano and Staiti offer implausible accounts of illusions and hallucinations, and deliver premature verdicts on Husserl in relation to the analytic debates on perception. (shrink)

Descartes first invokes the errors of the senses in the Meditations to generate doubt; he suggests that because the senses sometimes deceive, we have reason not to trust them. This use of sensory error to fuel a sceptical argument fits a traditional interpretation of the Meditations as a work concerned with finding a form of certainty that is proof against any sceptical doubt. If we focus instead on Descartes's aim of using the Meditations to lay foundations for his new (...) science, his appeals to sensory error take on a different aspect. Descartes's new science is based on ideas innate in the intellect, ideas that are validated by the benevolence of our creator. Appeals to sensory error are useful to him in undermining our naïve faith in the senses and guiding us to an appreciation of innate ideas. However, the errors of the senses pose problems in the context of Descartes's appeals to God's goodness to validate innate ideas and natural propensities to belief. A natural tendency to sensory error is hard to reconcile with the benevolence of our creator. This paper explores Descartes's responses to the problems of theodicy posed by various forms of sensory error. It argues that natural judgements involved in our visual perception of distance, size and shape pose a problem of error that resists his usual solutions. (shrink)

I present a novel argument against the epistemic conception of perception according to which perception either is a form of knowledge or puts the subject in a position to gain knowledge about what is perceived. ECP closes the gap between a perceptual experience that veridically presents a given state of affairs and an experience capable of yielding the knowledge that the state of affairs obtains. Against ECP, I describe a particular case of perceptual experience in which the following triad of (...) claims is true: The experience presents a given state of affairs ; The experience is veridical; The experience cannot yield the knowledge that the state of affairs obtains. This case involves an empirically well-studied phenomenon, namely perceptual hysteresis, which involves the maintenance of a perceptual experience with a relatively stable content over progressively degrading sensory stimulations. (shrink)

Aristotle sometimes claims that the perception of special perceptibles by their proper sense is unerring. This claim is striking, since it might seem that we quite often misperceive things like colours, sounds and smells. Aristotle also claims that the perception of common perceptibles is more prone to error than the perception of special perceptibles. This is puzzling in its own right, and also places constraints on the interpretation of. I argue that reading Alexander of Aphrodisias on perceptual error can help (...) to make good sense of both of Aristotle’s claims. (shrink)

Analyses of errors from a sequential auditory recall experiment indicated that perceptual factors influence the shape of the serial position curve of recall errors. The signal to noise ratio and presentation rate of the stimuli, as well as presentation rate during a prior training session, affected item and order errors. For experiments in which Ss simply monitored the auditory sequences for a preassigned critical item, and in which items were recalled in addition to monitoring, analyses of montoring (...) RTs provided evidence that the requirement to recall induces perceptual difficulties. (shrink)

This paper focuses on Paul of Venice’s realist theory of direct knowledge. In the second half of the 13th century human knowledge was standardly viewed as a process of abstraction enabling the human intellect to grasp the essences of corporeal things, regardless of the matter in which they are embodied. This process was achieved thanks to the mediation of mental entities (species intelligibiles) representing the dematerialised objects in the intellect. By the late 13th and early 14th centuries, however, some authors (...) began to regard this account as unsatisfactory. These authors held that assuming the existence of mediating species (considered themselves as objects of knowledge) amounts to thinking that between ourselves and the world there is a barrier preventing us from acquiring knowledge of reality in itself. Paul of Venice is aware of the sceptical accusations made against the theory of species in the 13th and 14th centuries. Nevertheless, he is a firm advocate of the existence of species. He claims that knowledge, despite coming about through species, is not indirect. Quite the contrary: we have immediate access to reality, and the individual objects that constitute it, precisely because our senses (which are purely passive) receive impressions direct from outside, thanks to species. He points out that species are not object of knowledge. They are not known at all during the cognitive process, as they are a mere means (a mechanical means, so to say), not an image nor a representation of anything, and therefore they are no obstacle between ourselves and the world. Thus, we are able to know reality exactly as it is in itself and, under ordinary conditions, our perceptions are practically infallible and cannot produce false knowledge. (shrink)

Slower perceptual alternations, a notable perceptual effect observed in psychiatric disorders, can be alleviated by antidepressant therapies that affect serotonin levels in the brain. While these phenomena have been well documented, the underlying neurocognitive mechanisms remain to be elucidated. Our study bridges this gap by employing a computational cognitive approach within a Bayesian predictive coding framework to explore these mechanisms in depression. We fitted a prediction error (PE) model to behavioral data from a binocular rivalry task, uncovering that significantly higher (...) initial prior precision and lower PE led to a slower switch rate in patients with depression. Furthermore, serotonin‐targeting antidepressant treatments significantly decreased the prior precision and increased PE, both of which were predictive of improvements in the perceptual alternation rate of depression patients. These findings indicated that the substantially slower perception switch rate in patients with depression was caused by the greater reliance on top‐down priors and that serotonin treatment's efficacy was in its recalibration of these priors and enhancement of PE. Our study not only elucidates the cognitive underpinnings of depression, but also suggests computational modeling as a potent tool for integrating cognitive science with clinical psychology, advancing our understanding and treatment of cognitive impairments in depression. (shrink)

According to the traditional inferential theory of perception, percepts of object motion or stationarity stem from an evaluation of afferent retinal signals (which encode image motion) with the help of extraretinal signals (which encode eye movements). According to direct perception theory, on the other hand, the percepts derive from retinally conveyed information only. Neither view is compatible with a perceptual phenomenon that occurs during visually induced sensations of ego motion (vection). A modified version of inferential theory yields a model in (...) which the concept of extraretinal signals is replaced by that of reference signals, which do not encode how the eyes move in their orbits but how they move in space. Hence reference signals are produced not only during eye movements but also during ego motion (i.e., in response to vestibular stimulation and to retinal image flow, which may induce vection). The present theory describes the interface between self-motion and object-motion percepts. An experimental paradigm that allows quantitative measurement of the magnitude and gain of reference signals and the size of the just noticeable difference (JND) between retinal and reference signals reveals that the distinction between direct and inferential theories largely depends on: (1) a mistaken belief that perceptual veridicality is evidence that extraretinal information is not involved, and (2) a failure to distinguish between (the perception of) absolute object motion in space and relative motion of objects with respect to each other. The model corrects these errors, and provides a new, unified framework for interpreting many phenomena in the field of motion perception. (shrink)

This chapter focuses on what’s novel in the perspective that the prediction error minimization (PEM) framework affords on the cognitive-scientific project of explaining intelligence by appeal to internal representations. It shows how truth-conditional and resemblance-based approaches to representation in generative models may be integrated. The PEM framework in cognitive science is an approach to cognition and perception centered on a simple idea: organisms represent the world by constantly predicting their own internal states. PEM theories often stress the hierarchical structure of (...) the generative models they posit. The novel explanatory power of the PEM account derives largely from the way in which pairs of generative and recognition models interact. “Predictive coding” refers to an encoding strategy in which predicted portions of an input signal are subtracted from the actual signal received, so that only the difference between the two is passed as output to the next stage of information processing. (shrink)

Smilek, Eastwood, Reynolds, and Kingstone suggests that the studies reported in Beck, M. R., Levin, D. T. and Angelone, B. A. are not ecologically valid. Here, we argue that not only are change blindness and change blindness blindness studies in general ecologically valid, but that the studies we reported in Beck, Levin, and Angelone, 2007 are as well. Specifically, we suggest that many of the changes used in our study could reasonably be expected to occur in the real world. Furthermore, (...) the conclusion from Beck et al. that knowledge about the role of intention and scene complexity in change detection is not readily accessible applies not only to the laboratory studies we conducted but also to real world situations. (shrink)