The bulk of the account of perception that Aristotle offers in De Anima focuses on analyzing the operation of the five senses and the reception of their respective objects. On Aristotle’s own terms, this analysis is an incomplete account of perception, for it does not explain how perception operates in the life of an animal, with the aim of supporting a certain kind of life. This paper aims to supplement the account of the five senses by considering (...) perception in the context of human life. I argue that human perception, i.e., rational perception, differs from non-rational perception insofar as the latter is perspectival—that is, the non-rational animal perceives objects only in light of its needs and desires—whereas the former is non-perspectival—that is, a person perceives objects as independent of and exceeding her desires. (shrink)

Despite being one of the major figures in late medieval thought and being the subject of numerous studies, certain topics concerning the Cardinal Nicholas of Cusa remain in need of further investigation. One of these is an aspect of his theory of cognition: his account of sense perception. It is our aim in this study to systematically look at his scattered remarks on the topic and make a number of suggestions as to the nature of his thought on how (...) we come to know external things. It is not our purpose to offer a comprehensive account of his theory of cognition. Our focus in this article is on his account of perception and the specific claim that Nicholas develops a model whereby reason operates together with the senses in perceptual experience. Despite being tentative our claim is grounded on suggestions found in the scholarship on Cusanus; but these suggestions remain quite vague and in need of exploration. In this article, we closely examine the textual evidence and develop our claim based o... (shrink)

There is an important division in the human mind between perception and reasoning. We reason from information that we have already, but perception is a means of taking in new information. Susanna Siegel argues that these two aspects of the mind become deeply intertwined when beliefs, fears, desires, or prejudice influence what we perceive.

Includes a summary of my book *The Rationality of Perception* (Oxford, 2017) and replies to commentaries on it by Endre Begby, Harmen Ghijsen, and Katia Samoilova. These commentaries and my summary and replies will be published soon in Analysis Reviews. Begby focuses on my analysis of the epistemic features of the interface between individual minds and their cultural milieu (discussed in chapter 10 of *The Rationality of Perception*), Ghijsen focuses on the notion of inference and reliabilism (chapters 5 (...) and 6), and Samoilova focuses on the relationship between epistemic charge (chapter 3) and shifts in the amount of justification needed for knowledge. (shrink)

My replies to Errol Lord, Adam Pautz, and Peter Railton's commentaries on The Rationality of Perception (2017).

The present paper investigates the first step of rational belief acquisition. It, thus, focuses on justificatory relations between perceptual experiences and perceptual beliefs, and between their contents, respectively. In particular, the paper aims at outlining how it is possible to reason from the content of perceptual experiences to the content of perceptual beliefs. The paper thereby approaches this aim by combining a formal epistemology perspective with an eye towards recent advances in philosophy of cognition. Furthermore the paper restricts its (...) focus, it concentrates on the case of color perception and perceptual beliefs about color. (shrink)

[A]ny theory of practical rationality must explain— or explain away—the following: Rational: In many cases, what it is rational (in some sense) for one to do or intend to do depends on what one desires. [...] I argue that in order to capture the rational significance of desire, we need to consider both its content and its force, on analogy to the rational significance of both the force and content of beliefs and perceptual experiences. This will (...) open up a new and more elegant way of explaining Rational, while also allowing us to understand how our desires provide us with a basic form of normative experience. Thus, in the end, this will provide the basis for a novel defense of the ancient thesis that desire, in some sense, presents its object under the “guise of the good.”. (shrink)

Rational individuals who perceive information sequentially are confronted to cognitive dissonance and dynamic uncertainty in a way that sets a natural limit to the ex post efficiency of their choices. From the normative perspective which ignores this dynamic uncertainty, their rationality seems limited. Sequential perception is assumed in a model of Bayesian revision of the contingent preference in a repeated choice. This model predicts both the cognitive dissonance phenomenon studied by Festinger and the formation of stable habits. It (...) also shows how an ordinary man can be rational with bounded informational and computational abilities and, for the same reasons, give a disproportionate weight to impressions without any normative value in his own choices and judgments. Sequential perception and cognitive consistency offer a credible alternative to the cognitive bias paradigm for predicting anomalies in choice and game behavior.Des individus logiques percevant l’information de manière séquentielle sont soumis à une dissonance cognitive et une incertitude dynamique qui limitent naturellement l’efficacité ex post de leurs choix. Du point de vue normatif, qui ignore cette incertitude dynamique, leur rationalité apparaît limitée. L’hypothèse de perception séquentielle est introduite dans un modèle de révision bayésienne de la préférence contingente lors d’un choix répété. Ce modèle prédit à la fois le phénomène de dissonance cognitive étudié par Festinger et la formation d’une habitude stable. Il montre aussi comment un homme ordinaire peut être rationnel sans disposer de capacités d’information et de calcul démesurées et, pour les mêmes raisons, subir l’influence disproportionnée d’impressions dénuées de valeur normative dans les choix ou les jugements qu’il porte. La perception séquentielle et la cohérence cognitive offrent une alternative crédible au paradigme des biais cognitifs pour expliquer tous les comportements humains qui réfutent la théorie normative des choix et des jeux. (shrink)

How we come to know the external world has intrigued thinkers throughout the history of philosophy. Medieval philosophers understood that a theory of perception requires an account of the categorization of sensory information: to perceive things as being dangerous or beneficial and even as being individuals that belong to certain kinds (e.g., 'this is a dog'). A key question is whether this requires the intervention of rational cognitive capacities, cooperating with sensory ones in normal instances of perception. (...) The contributions to this volume investigate how thinkers from the thirteenth and fourteenth centuries answer this and other related questions about human perception. Contributors are Fabrizio Amerini, Joel Biard, Veronique Decaix, Christian Kny, Lydia Schumacher, Josee Filipe Silva, and Jorg Alejandro Tellkamp. (shrink)

In her book The Rationality of Perception, Susanna Siegel argues for the interesting idea that perceptual experiences are in an important epistemic sense much more like beliefs than has previously been supposed. Like beliefs, perceptual experiences themselves already manifest a certain epistemic status, and, like beliefs, the way in which those experiences are formed will impact what that epistemic status will be. In what follows, I will first contrast this view of the rationality of perception with the usual (...) way of thinking about perception and justification and explain some of its crucial motivations (§1). I will then go on to critically discuss some of the details of Siegel’s account about what grounds the epistemic status of experience (§2) and how that status is inferentially modulated (§3). Although this raises some doubts about the specific way in which Siegel cashes out the rationality of perception, the core idea remains an interesting open possibility. (shrink)

The article covers such issues as the relevance of the theory of perception as a multi-level information processing, the methodological role of the concept of representation and the relation of neurodynamic structures to subjective experience. The author critically reviews the philosophical presumptions underlying the various concepts of “local rationality,” the core of which is constituted by the belief that large ethnic cultures generate or are based on their own rationality and their own logic. Three statements are successively considered: thinking (...) is based on the inherent rules of rationality, logic is an extract of rationality, and types of rationality are geographically consistent with large ethnocultural communities. Empirical arguments are presented that demonstrate equivocality of the first two theses. In particular, firstly, it is shown that the genuine rationality of thinking lies not in following the rules that are immanent to it, but in the development of thinking and, more broadly, cognitive operations towards optimization of certain indicators of the cognitive or motor system that are important for survival and adaptation. In addition, this rationality is multivariate, and the choice between variants is often weakly determined or even random. Thus, the first statement turns out to be refuted. Secondly, by reference to the well-known experiments, it is shown that most people do not explicitly follow some declared logical rules in solving even logical or mathematical problems, and yet there is reason to consider their behavior rational. The third thesis, as shown with some limited empirical material, appears to be partially confirmed. Nevertheless, the demonstration of the doubtfulness of the first two theses makes the conclusion that different nations have different logics insufficiently substantiated. (shrink)

Aquinas holds that human beings perceive material objects in a rational way, since their sensory faculty is always under the guidance of the rational faculty. This paper intends to shed light on this fundamental thesis. First, it examines the metaphysical background, focusing on Aquinas’s claim that there is just one soul with interconnected, hierarchically ordered faculties. Second, it looks at the interconnection in the case of perception, paying particular attention to the vis cogitativa. This special power, which (...) can only be found in human beings, belongs to the sensory faculty but is always guided by the rational faculty and produces perceptions that are conceptually structured: it enables human beings to see something as something. Third, the paper builds a bridge to recent theories of “transformative rationality.” Like the advocates of this theory, Aquinas claims that rationality is not simply added to sensory activity, but rather something that is present in every act of human perception. (shrink)

In book 10 of the Republic we find a new argument for the division of the soul. The argument’s structure is similar to the arguments in book 4 but, unlike those arguments, it centres on a purely cognitive conflict: believing and disbelieving the same thing, at the same time. The argument presents two interpretive difficulties. First, it assumes that a conflict between a belief and an appearance—e.g. disbelieving that a stick partially immersed in water is, as it appears, bent—entails a (...) conflict between beliefs. Prima facie, there is only one belief, the belief that contradicts the appearance. Second, it is unclear what parts of the soul Plato intends to divide between: some argue that it is, as in book 4, a partition between a rational and a non-rational part; others argue that it is a new partition between a higher and a lower subdivision of the rational part. This paper offers solutions to both difficulties through an analysis of what Plato means by φαινόμενα, ‘appearances’, and δόξαι, ‘beliefs’. It is argued, first, that the relevant appearances are entirely sensory but nonetheless sufficiently belief-like to (a) warrant being called δόξαι and (b) oppose, by themselves, our beliefs; there is no need for a third mental state, a belief that assents to the appearance. A second claim concerns a central line in the argument, 602e4–6, that has served as the primary evidence that the partition is within the rational part of the soul. Those who wish to avoid this conclusion generally resort to alternative, and less natural, translations of 602e4–6. It is argued that this is unnecessary: once we have correctly understood sensory appearances, we see that the standard translation of 602e4–6 in fact entails a division between a rational and a non-rational part of the soul. (shrink)

Resource rationality may explain suboptimal patterns of reasoning; but what of “anti-Bayesian” effects where the mind updates in a direction opposite the one it should? We present two phenomena — belief polarization and the size-weight illusion — that are not obviously explained by performance- or resource-based constraints, nor by the authors’ brief discussion of reference repulsion. Can resource rationality accommodate them?

This commentary uses the dynamic of identity-protective cognition to pose a friendly challenge to Jussim (2012). Like other forms of information processing, this one is too readily characterized as a bias. It is no mistake, however, to view identity-protective cognition as generating inaccurate perceptions. The “bounded rationality” paradigm incorrectly equates rationality with forming accurate beliefs. But so does Jussim's critique.

This is a review of Susanna Siegel's The Rationality of Perception.

In The Rationality of Perception, Susanna Siegel defends the claim that beliefs can influence our perceptions. Faulty beliefs make our experiences irrational. This explains why the biases some people hold are so tenacious. The authors point out weaknesses in Siegel’s argument.

Susanna Schellenberg has presented several arguments for the "situation-dependency thesis" (SDT), i.e. the claim that (visual) perceptual experiences are necessarily situation-dependent, insofar as they represent objects' situation-dependent properties. In my critical response to her paper, I focus on her argument from the "epistemic dependence thesis" (EDT), according to which "perceptual knowledge of intrinsic properties is epistemically dependent on representations of the relevant situation-dependent properties" (Schellenberg 2008, 75). I consider what support she musters for EDT, so as to make an objection (...) to her argument from EDT. To address this objection (or, rather, to bypass it), I will re-formulate the EDT, as a different but closely related thesis that I will call EDT*, informed by the admittedly radical Husserlian view that perception is epistemically rational. (shrink)

Preface to The Rationality of Perception.

Can we be responsible for our attention? Can attention be epistemically good or bad? Siegel tackles these under‐explored questions in “Selection Effects”, a pathbreaking chapter of The Rationality of Perception. In this chapter, Siegel develops one of the first philosophical accounts of attention norms. Her account is inferential: patterns of attention are often controlled by inferences and therefore subject to rational epistemic norms that govern any other form of inference. Although Siegel’s account is explanatorily powerful, it cannot capture (...) a core attention norm in cognitive science: one should balance between exploratory and exploitative attention. For central cases of exploratory attention such as mind‐wandering, child‐like, and creative thinking are non‐inferential. Siegel’s view classifies them as “normative freebies” that are not subject to epistemic evaluation. We’re therefore left with a disjunctive conclusion: either Siegel’s inferentialist theory of attention norms is incomplete or cognitive scientists are wrong about the norms that govern attention. (shrink)

In this paper, I offer a new argument for the perceptual rationality thesis: the claim that perceptual experiences themselves can be rational or irrational. In her book The Rationality of Perception, Susanna Siegel has offered several intertwined arguments for this same thesis, and, as you will see, one of Siegel’s arguments is what inspires my own. However, I will suggest that the new argument is significantly better-supported than Siegel’s original argument.

Theories of practical reason must meet a psychological requirement: they must explain how normative practical reasons can be motivationally efficacious. It would be pointless to claim that we are subject to normative demands of reason, if we were in fact unable to meet those demands. Concerning this requirement to account for the possibility of rational motivation, internalist approaches are distinguished from externalist ones. I defend internalism, whilst rejecting both ways in which the belief‐desire model can be instantiated. Both the (...) Humean and the Kantian instantiation of that model fail to account for the internal connection between normative and motivating reasons required by internalism. The two classes of reasons rather come to be seen as mutually exclusive. Opposing the belief‐desire model, I argue that rational motivation can only be established by reference to emotion. Emotions are affective perceptions. They have motivational force so that they can contribute to the explanation of action. At the same time they can rationalise actions because they have an intentional content which resembles the content of sensory perception in being representational. Because of this, the emotions can noninferentially justify judgements, which in turn can justify actions. I conclude by outlining the Aristotelian account of practical reason and ethics that emerges from integrating the emotions into practical reasoning. Doing the right thing is much more a matter of seeing things right than of drawing the right inferences. Seeing things right, in its turn, is not only to justify an action: it necessarily implies to be motivated to act accordingly. (shrink)

Regulatory bodies tend to treat people’s emotional responses towards foods as a nuisance for rational opinion-formation and decision-making. This position is thought to be supported by such evidence as: (1) people showing negative emotional responses to the idea of eating meat products from vaccinated livestock; and (2) people showing positive emotional responses to Magnum’s “7 sins” marketing campaign. Such cases are thought to support the idea that regulatory communication about foods should abstract from people’s emotional perceptions and that corporate (...) marketing of foods should show restraint in capitalizing upon these weaknesses of the heart. This paper, on the contrary, argues that people’s emotional perceptions of foods represent valuable sources of knowledge. This argument is developed by making the dominant reception of people’s emotions intelligible by tracing its roots through the history of the Platonic paradigm. Although this paradigm has dominated the philosophical and psychological debate about emotions, the idea that emotions are sources of knowledge has recently gained force. This paper also traces the historical roots of the alternative Aristotelian paradigm. The cases of meat products from vaccinated livestock and Magnum’s 7 sins serve to illustrate this controversy. The paper concludes by showing that a neo-Platonic emphasis on the irrationality of emotions does not contribute to a fruitful discussion about implications of people’s perceptions for agricultural and food politics, whereas a neo-Aristotelian account of rational emotions could enable regulatory bodies to engage people in a fruitful process of opinion-formation and decision-making about food production and consumption. (shrink)

This paper examines an ancient debate over the rationality of perception. What leads the Stoics to affirm, and the Epicureans to deny, that to form a sense-impression is an activity of reason? The answer, we argue, lies in a disagreement over what is required for epistemic success. For the Stoics, epistemic success consists in believing the right propositions, and only rational states, in virtue of their predicational structure, put us in touch with propositions. Since they identify some sense-impressions (...) as criteria of truth and thus as the basis for epistemic success, the Stoics maintain that sense-impressions must be rational. The Epicureans agree with the Stoics that sense-impressions function as criteria of truth, and also agree broadly on what it means for a state to be rational, but deny that sense-impressions are rational because (1) they think that epistemic success must be supported by a state that is necessarily error-free and (2) accept that rational states can be false. In reconstructing this debate, we refine the standard interpretation of the fundamental difference between Epicurean and Stoic epistemology and also develop parallels with epistemological debates today. One upshot is a more nuanced appreciation of the merits of Epicurean epistemology vis-à-vis the Stoics. (shrink)

Anil Gupta's Empiricism and Experience is a stylish and stimulating contribution to our subject. My expectation is that those who disagree with some of its central theses will, like me, learn greatly from thinking through where and why they part company with Gupta's lucidly presented position. For the purposes of a Symposium, I select three points of disagreement. Each point in one way or another concerns the epistemic role of the content of experience.

The demands of rationality are linked both to our subjective normative perspective (given that rationality is a person-level concept) and to objective reasons or favoring relations (given that rationality is non-contingently authoritative for us). In this paper, I propose a new way of reconciling the tension between these two aspects: roughly, what rationality requires of us is having the attitudes that correspond to our take on reasons in the light of our evidence, but only if it is competent. I show (...) how this view can account for structural rationality on the assumption that intentions and beliefs as such involve competent perceptions of downstream reasons, and explore various implications of the account. (shrink)

The aim of the present work is to show the roots of the conception of perception as an active process, tracing the history of its development from Plato to modern philosophy. The contributors inquire into what activity is taken to mean in different theories, challenging traditional historical accounts of perception that stress the passivity of percipients in coming to know the external world. Special attention is paid to the psychological and physiological mechanisms of perception, rational and (...) non-rational perception and the role of awareness in the perceptual process. Perception has often been conceived as a process in which the passive aspects - such as the reception of sensory stimuli - were stressed and the active ones overlooked. However, during recent decades research in cognitive science and philosophy of mind has emphasized the activity of the subject in the process of sense perception, often associating this activity to the notions of attention and intentionality. Although it is recognized that there are ancient roots to the view that perception is fundamentally active, the history remains largely unexplored. The book is directed to all those interested in contemporary debates in the fields of philosophy of mind and cognitive psychology who would like to become acquainted with the historical background of active perception, but for historical reliability the aim is to make no compromises. (shrink)

In Susanna Siegel’s compelling presentation of the case for the rationality of perception, a “significant part of the constructive defense” is played by the idea that there are “inferential routes to perceptual experience” (Siegel 2017, p. 94). Inferences, after all, are epistemically evaluable and bear on the rational standing of their conclusions. She argues that an obstacle to accepting this idea is a “Reckoning Model” of inference, and shows by example that we recognize as inferences various familiar kinds (...) of responses to information that do not fit this model. She offers a more general approach to the nature of inference that fits these examples and accommodates inferential routes to perceptual experience. I argue that Siegel needs to say more about the mental processes involved in such inferrings, and how it can be more than merely associative and yet still distinct from Reckoning. Fortunately, a psychologically‐ and conceptually‐grounded distinction between model‐free vs. model‐based learning and guidance processes can provide a characterization that plays the role Siegel needs. (shrink)

Rational intuitions involve a particular form of understanding that gives them a special epistemic status. This form of understanding and its epistemic efficacy are not explained by several current theories of rational intuition, including Phenomenal Conservatism (Huemer, Skepticism and the veil of perception, 2001 ; Ethical intuitionism, 2005 ; Philos Phenomenol Res 74:30–55, 2007 ), Proper Functionalism (Plantinga, Warrant and proper function, 1993 ), the Competency Theory (Bealer Pac Philos Q 81:1–30, 2000 ; Sosa, A virtue epistemology, (...) 2007 ) and the Direct Awareness View (Conee, Philos Phenomenol Res 4:847–857, 1998 ; Bonjour, In defense of pure reason, 1998 ). Some overlook it; others try to account for it but fail. We can account for the role of understanding in rational intuition by returning to the view of some of the early Rationalists, e.g. Descartes and Leibniz. While that view carries a prohibitive cost, it does contain an insight that may help us solve the problem of giving understanding its due. (shrink)

This paper applies the account developed by Susanna Siegel in The Rationality of Perception to aesthetic cases and explores the implications of such an account for aesthetic engagement as well as curatorial and exhibitionary practices. It argues that one’s prior outlook – expertise, beliefs, desires, fears, preferences, attitudes – can have both aesthetically good and bad influences on perceptual experiences, just as it can have both epistemically good and bad influences. Analysing these bad influences in cases of ‘hijacked’ aesthetic (...) perception will reveal that, unless we recognize that our perception of high-level and low-level aesthetically relevant properties is norm-governed, we will be at a loss to explain what goes wrong in these cases. Just as perception can be rational or irrational, so too can it be apt or inapt. (shrink)

Additive theories of rationality, as I use the term, are theories that hold that an account of our capacity to reflect on perceptually-given reasons for belief and desire-based reasons for action can begin with an account of what it is to perceive and desire, in terms that do not presuppose any connection to the capacity to reflect on reasons, and then can add an account of the capacity for rational reflection, conceived as an independent capacity to ‘monitor’ and ‘regulate’ (...) our believing-on-the-basis-of-perception and our acting-on-the-basis-of-desire. I show that a number of recent discussions of human rationality are committed to an additive approach, and I raise two difficulties for this approach, each analogous to a classic problem for Cartesian dualism. The interaction problem concerns how capacities conceived as intrinsically independent of the power of reason can interact with this power in what is intuitively the right way. The unity problem concerns how an additive theorist can explain a rational subject's entitlement to conceive of the animal whose perceptual and desiderative life he or she oversees as ‘I’ rather than ‘it’. I argue that these difficulties motivate a general skepticism about the additive approach, and I sketch an alternative, ‘transformative’ framework in which to think about the cognitive and practical capacities of a rational animal. (shrink)

Abstract: According to a rationalist theory of introspection, rational agents have a capacity to believe they are in conscious states when they are in them, much as they have the capacity, for example, to avoid obvious contradictions in their beliefs. For the agent to know or believe by introspection, on this view, is for them to exercise that capacity. According to an acquaintance theory of introspection, by contrast, whenever an agent is in a conscious state, the agent is aware (...) of or is acquainted with being in the state, where the background notion of acquaintance is understood to be distinct from sense perception, on the one hand, and belief or knowledge, or the other. For the agent to know or believe by introspection, on this view, is for them to take advantage of the epistemic position they occupy in virtue of being acquainted in this way. These theories are not in conflict; it is possible to hold both an acquaintance theory and a rationalist theory. This paper, however, sets out and recommends a different possibility, namely, that of holding a rationalist theory while rejecting any acquaintance theory. (shrink)