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mental states
Also known as: mental state
synthesized from dimensionsMental states are internal psychological phenomena—including beliefs, desires, perceptions, emotions, and thoughts—that constitute the subjective life of a thinking subject belief as mental state. They are characterized by "privileged access," meaning they are directly available to the subject through introspection privileged access, yet they remain distinct from external physical objects. A defining feature of many mental states is intentionality, or "aboutness," which allows the mind to be directed toward objects or states in the world intentionality as defining feature.
The ontological status of mental states remains a central problem in philosophy, often framed as the mind-body problem mind-body problem defined. Perspectives on this relationship vary widely: materialist and reductionist views argue that mental states are either identical to or reducible to physical brain states materialist views assert, strong reductionism. Conversely, functionalism defines mental states by their causal roles—how they mediate between stimuli and behavior—rather than their physical composition functionalist theories defined. Other frameworks, such as property dualism or panpsychism, suggest that mental properties are irreducible or fundamental to reality property dualism, non-physical properties of matter.
A significant challenge in characterizing these states is the "hard problem of consciousness," which highlights the explanatory gap between objective, third-person scientific descriptions of the brain and the first-person, subjective experience of "what it is like" to be in a mental state, known as qualia hard problem gap, qualia arguments emphasize. While some theories, such as Higher-Order Thought (HOT), posit that a state only becomes conscious when the subject is aware of being in it higher-order theories posit, others emphasize the role of emergent patterns or neural state space partitions in bridging the gap between mind and matter mental states as emergent, contextual emergence published.
The causal power of mental states is also a subject of intense debate. Epiphenomenalism suggests that mental states are merely byproducts of physical processes with no causal influence on behavior epiphenomenalism objection. In contrast, theories of "downward causation" argue that mental states can exert influence on physical systems downward causation theory. Furthermore, mental states are essential to social cognition; through a "Theory of Mind," individuals predict the behavior of others by attributing beliefs and desires to them Theory of Mind.
Finally, mental states hold significant weight in epistemology. Internalists argue that the justification for knowledge depends solely on these internal states internalist justification, and evidentialism posits that evidence itself consists of mental representations evidentialism evidence. Despite skepticism from behaviorists who prefer to focus on observable actions Klinikong, the consensus among most researchers is that mental states represent a reality that extends beyond mere interpretive stances arXiv.
Model Perspectives (5)
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Mental states represent a complex philosophical and scientific intersection concerning the nature of consciousness, intentionality, and their relationship to physical brain mechanisms. A defining feature of mental states is intentionality—the property by which states such as thoughts and perceptions are directed toward objects or states in the world, a concept famously identified by Franz Brentano as 'the mark of the mental' intentionality as defining feature, intentionality directed toward world.
Central to the study of these states is the 'hard problem of consciousness,' a term coined by David Chalmers to describe the significant explanatory gap between third-person scientific accounts and first-person subjective experiences hard problem gap. This subjective nature is further characterized by 'privileged access,' where only the possessor of a mental state can directly experience it, unlike physical objects which are accessible to everyone privileged access.
Theoretical frameworks for understanding mental states vary significantly:
- Reductionist and Physicalist views: Some approaches, such as eliminative materialism, argue that mental states as defined in folk psychology do not correspond to actual brain mechanisms eliminative materialism view. Conversely, non-reductive physicalism suggests a middle ground between total reduction and dualism non-reductive physicalism.
- Functionalist views: Functionalism prioritizes the roles and causal relations of mental states over their physical composition functionalist perspective, with some theorists suggesting that artificial intelligence could theoretically realize these states if functional roles are replicated AI and mental states.
- Dualist and Alternative views: Property dualism suggests that mental and physical properties are distinct and irreducible property dualism, while others like Thomas Nagel propose that basic matter may possess non-physical properties that imply the existence of mental states non-physical properties of matter.
Additionally, there is significant debate regarding the causal power of mental states. Epiphenomenalism posits that mental states have no causal influence on physical behavior epiphenomenalism objection, whereas theories of 'downward causation' argue that mental states can influence physical states without violating physical laws downward causation theory. Finally, the social aspect of mental states is captured by 'Theory of Mind,' which posits that humans predict the behavior of others by attributing beliefs, desires, and intentions to them Theory of Mind.
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Mental states are central to the mind-body problem, which investigates the relationship between these states and physical reality mind-body problem defined. Philosophical perspectives on their nature vary significantly: functionalists, such as those discussed by McLaughlin, define mental states by their causal roles as mediators between stimuli and behavior functionalist theories defined. This contrasts with materialist views, which assert that mental states are simply physical states materialist views assert, and identity theories that treat them as 'central states' viewed from different perspectives identity theories advocated.
A primary challenge in characterizing mental states is 'qualia'—the subjective 'what it is like' to be in a specific mental state qualia arguments emphasize. This qualitative nature complicates reductionist accounts, as explained by Thomas Nagel and David Chalmers phenomenal qualities defined. Furthermore, mental states are characterized by 'intentionality,' the property of being 'about' other things, which physical objects cannot literally possess intentionality is property.
Scientific and emergentist approaches attempt to bridge these states with neurodynamics. George Ellis argues that mental states function as emergent patterns that exert causal influence on neural activity mental states as emergent, while researchers like Atmanspacher and beim Graben suggest that mental states arise from partitions of neural state space contextual emergence published. However, some quantum-based models, such as those by Freeman and Vitiello, emphasize distinguishing between the brain's physical field and the mental states themselves to avoid category errors quantum field model. Additionally, theories like Higher-Order Thought (HOT) suggest that a mental state becomes conscious only when a subject is aware of being in that state higher-order theories posit.
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The concept of mental states serves as a central point of inquiry in the mind-body problem, with debates centered on their ontological status and their relationship to the physical world. A primary tension exists between strong reductionism, which argues that mental states can be fully reduced to material or physical domains explaining mental through material, and theories of emergence, such as those defined by Achim Stephan, which posit that mental properties cannot be understood solely through the material brain emergence defined by Stephan.
Methodologically, mental states are approached through various frameworks:
- Functional and Computational: Computational functionalism defines these states by their specific computational roles defined by computational role.
- Stability-Based: Research suggests these states are categorized by their stability within a state space, where stable states activate conscious representations stability in state space.
- Phenomenological: David Chalmers suggests states can be described in psychological or phenomenological terms described by Chalmers, and qualitative consciousness is a property applied to such states defined as qualitative consciousness.
A significant challenge remains in the causal interpretation of these states. While epiphenomenalism suggests mental states lack physical effects mental states lack effects, other researchers, such as Velmans and Ellis et al., have shown interest in 'downward causation,' where mental states exert influence on brain states efficacy of mental states. Furthermore, the current understanding of the mind-matter connection relies heavily on empirical correlations rather than established causal explanations correlations are only descriptive.
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Mental states are internal conditions of the mind encompassing knowledge, beliefs, perceptions, thoughts, and ideas, existing only within thinking subjects as per the Internet Encyclopedia of Philosophy knowledge requires mind and belief as mental state. George Berkeley, according to Cambridge University Press, posited that reality fundamentally consists of mental subjects and their ideas Berkeley's idealism. The Stanford Encyclopedia of Philosophy outlines frameworks for relating material brain states to mental states via reduction, supervenience, or emergence brain-mental relations, with functionalism defining them by organizational structures functionalist view and Ned Block endorsing psychofunctionalism Block's psychofunctionalism. Introspection provides access to one's own mental states, distinguishing them from external perceptions introspection capacity. In epistemology, internalists argue justification stems solely from mental states internalist justification, contrasting externalists, while evidentialism ties it to evidence as mental representations evidentialism evidence. Conscious mental states involve awareness or stability conscious awareness, with some quantum models treating them as vacuum states per Ricciardi, Umezawa, and Giuseppe Vitiello quantum memory states. Attribution to self and others involves theory-theory or simulationism theory attribution. David Hume's bundle theory denies an underlying self for mental states Hume's bundle theory.
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Mental states are internal psychological phenomena, such as beliefs, desires, perceptions, emotions, thirst, fatigue, excitement, or depression, accessible primarily through introspection, which allows individuals to inspect their own mind. According to the Stanford Encyclopedia of Philosophy, introspection enables recognition of these states, though Gopnik and Meltzoff (1994) argue that even self-knowledge derives from a theory akin to understanding others' states. They contrast with brain states, as Freeman and Vitiello (2008) clarified their model describes brain activity, not mental states, though later work included them. Central to philosophy of mind, the ontological mind-body question debates if mental states are distinct from or reducible to physical ones, with strong reductionism asserting full reduction to material or physical domains, potentially rendering them epiphenomenal. Alternatives like enactivism ground them in living organisms per John Stewart (2010), while panpsychism avoids ascribing complex states to particles Stanford Encyclopedia. In epistemology, mentalist internalism holds justification depends solely on mental states like sensory inputs or beliefs per Internet Encyclopedia of Philosophy, contrasting externalism; evidentialism views evidence as mental states Stanford Encyclopedia. Most researchers affirm mental states' reality beyond interpretive stances arXiv, with debates on downward causation Velmans (2002), Ellis et al. (2011), unconscious states Stanford, and stability in state space Stanford. Behaviorism eschews them for observables Klinikong, and skepticism questions knowing others' Wikipedia.
Facts (184)
Sources
Dualism (Stanford Encyclopedia of Philosophy/Winter 2016 Edition) plato.stanford.edu Aug 19, 2003 19 facts
claimPhysical objects are equally accessible to anyone in principle, whereas the possessor of mental states has privileged access to them that no one else can share.
claimA major objection to epiphenomenalism is that if mental states have no causal power, there is no evolutionary reason for them to have developed.
claimFrank Jackson (1982) argues that mental states are evolutionary by-products of brain states, using the analogy that the heaviness of a polar bear's coat is a side effect of the coat's warmth-providing function.
claimIf epiphenomenalism is true, mental states do not explain behavior, making it explanatorily redundant to postulate mental states for others when a physical explanation for their behavior exists.
claimEpiphenomenalism is considered counterintuitive because it contradicts the common observation that mental states, such as pain or visual experience, cause physical behaviors, such as crying or running away.
referenceDavid Hume is credited with the "bundle" theory of the self, which asserts that mental states exist without an underlying subject or substance to possess them, as described in his work "Treatise Book I, Part IV, section VI."
claimThe argument from analogy for the existence of other minds posits that because an individual knows their own mental states are correlated with their own behavior, they can infer that similar behavior in others is accompanied by similar mental states.
claimMental states are characterized by two primary properties: subjectivity (privileged access) and intentionality.
claimIntentionality is the property of mental states being 'about' other things, including non-existent things like Zeus or the square root of minus one, which physical things cannot literally be.
claimDavid Hume held the view that subjects of mental states are merely bundles of immaterial states, rather than distinct entities over and above those states.
perspectiveSensible properties that function as objects of mental states provide the only intelligible content for creating a concrete picture of the world.
perspectiveMaterialist views assert that mental states are simply physical states, despite appearances to the contrary.
claimThe 'problem of other minds' exists because individuals have privileged access to their own mental states, but there is no corresponding 'problem of my own mind'.
claimInteractionism faces a significant objection because mental properties, states, or substances are often considered to be of radically different kinds from physical ones, which supposedly prevents the communality necessary for interaction.
claimThe causal question within the mind-body problem asks whether physical states influence mental states, whether mental states influence physical states, and the mechanisms by which these influences occur.
claimThe mind-body problem is defined as the set of questions concerning the relationship between mental states and physical states.
claimThe ontological question within the mind-body problem asks whether mental states and physical states are distinct, or if one class is a subclass of the other.
claimIrreducible special sciences and their specific predicates depend on the existence of minds and mental states because only minds possess interest-relative perspectives.
claimDavid Hume believed that an impression might 'float free' from the mind to which it belonged, implying that the identity conditions of individual mental states are independent of the identity of the person who possesses them.
Quantum Approaches to Consciousness plato.stanford.edu Nov 30, 2004 18 facts
quoteFreeman and Vitiello (2008) clarified that their model "describes the brain, not mental states."
referenceRicciardi and Umezawa proposed in the 1960s that mental states, specifically memory states, can be treated in terms of vacuum states of quantum fields, an approach currently supported by Giuseppe Vitiello.
referenceConte et al. (2009) report that mental states follow quantum mechanics during the perception and cognition of ambiguous figures in their paper 'Mental states follow quantum mechanics during perception and cognition of ambiguous figures' published in Open Systems and Information Dynamics.
claimDavid Chalmers coined the notion of the 'hard problem of consciousness' to describe the gap between third-person and first-person accounts of mental states.
claimGiuseppe Vitiello's accounts suggest an inclination toward a dual-aspect approach regarding the relationship between brain states and mental states.
referenceQualia arguments emphasize the impossibility for materialist accounts to properly incorporate the quality of the subjective experience of a mental state, described as the 'what it is like' to be in that state (Nagel 1974).
claimIn a hypothetical state space, a sequence of conscious, intentional mental states forms a trajectory representing the stream of consciousness.
perspectiveThe majority of presentations of the quantum approach to consciousness do not consistently distinguish between mental states and material states, suggesting an underlying assumption of the reducibility of mental activity to brain activity.
claimMany contemporary approaches to consciousness research prefer to distinguish between first-person and third-person perspectives rather than mental and material states to highlight the discrepancy between immediate conscious experiences (qualia) and their behavioral, neural, or biophysical descriptions.
referenceAtmanspacher H. and beim Graben P. published 'Contextual emergence of mental states from neurodynamics' in Chaos and Complexity Letters in 2007.
referenceIdentity theories, as advocated by Herbert Feigl (1967) and J.J.C. Smart (1963), conceive mental and material states as essentially identical 'central states' viewed from different perspectives.
claimMax Velmans noted in 2002 that the causal efficacy of mental states upon brain states, often referred to as 'downward causation', has attracted growing interest.
claimThe 'dual aspect' theory posits that mental and material states are distinguished aspects of a psychophysically neutral 'background reality'.
claimStrong reductionism claims that all mental states and properties can be reduced to the material domain (materialism) or to physics (physicalism), asserting that exploring the material domain is both necessary and sufficient to understand the mental domain.
claimMental states are assumed to be more or less stable depending on their position in the state space, with stable states distinguished by a residence time longer than that of metastable or unstable states.
claimAchim Stephan defined emergence in 1999 as a framework where mental states or properties are considered emergent if the material brain is neither necessary nor sufficient to explore and understand them.
claimThe quantum field theory approach to brain modeling contains conceptual ambiguities regarding the distinction between mental and material states.
claimThe existing body of knowledge regarding the mind-matter problem consists essentially of empirical correlations between material and mental states, which are descriptive rather than explanatory or causally conditioned.
Quantum Approaches to Consciousness plato.stanford.edu Nov 30, 2004 14 facts
formulaThe minimal framework for studying reduction, supervenience, or emergence relations between material brain states [ma] and mental states [me] is represented by the relation [ma] ↔ [me].
claimA dualistic picture of mind-matter relations arises when attempts to reduce mental states to material states leave residua, suggesting that the mental cannot be fully reduced to the material.
claimThe concept of 'quantum mind without quantum brain' posits that mental states and observables can exhibit features resembling quantum behavior even if the correlated brain activity is entirely classical, provided the partition of neural states is not properly constructed.
perspectiveFrom the perspective of standard present-day quantum physics, including the mental state of observers in the theory is considered unorthodox and highly speculative.
claimGiuseppe Vitiello is a prominent current proponent of the theory that mental states are vacuum states of quantum fields.
claimA neuronal assembly representing a mental state is activated when its constituent neurons operate more actively, such as by producing higher firing rates, compared to their default mode.
claimRelations between mental and material states can be conceived in a non-reductive fashion, such as through emergence relations.
claimAd hoc chosen partitions of neural state space generally create incompatible descriptions of mental states, as noted by Atmanspacher and beim Graben (2007).
claimIn Henry Stapp's model, intentional mental states correspond to reductions of superposition states of neuronal assemblies.
claimFreeman and Vitiello (2008) clarified that the quantum field theory model of the brain describes the brain itself, not mental states, correcting previous confusion between mental and material states.
claimStrong reductionism leads to a monistic picture where mental states are either eliminated or considered epiphenomenal.
claimThe concept of 'downward causation,' referring to the causal efficacy of mental states upon brain states, has gained increased research interest as cited by Velmans (2002) and Ellis et al. (2011).
claimFreeman and Vitiello (2016) proposed a method to explicitly include mental states in their model of brain activity in their final joint paper.
claimMental states are categorized by stability properties based on their position in a hypothetical state space, where stable states have longer residence times than metastable or unstable states and activate conscious mental representations when stable against perturbations.
Epistemology - Stanford Encyclopedia of Philosophy plato.stanford.edu Dec 14, 2005 11 facts
claimIntrospection is defined as the capacity to inspect the internal mental states of one's own mind.
claimExperiential foundationalism asserts that a belief is justified by a mental state that is not a belief, specifically the perceptual experience that the belief is about.
claimEvidentialism asserts that whether one is justified in believing a proposition depends on one's evidence regarding that proposition, and that this evidence consists of one's mental states.
claimEvidentialists define justified belief as the possession of evidence, where possessing evidence is defined as being in a mental state that represents a proposition as being true.
claimSense data are a species of mental states that individuals know directly, serving as the foundation for knowledge in indirect realism.
claimThe principle of Necessity asserts that a priori recognizable, necessary principles determine what is evidence for what, allowing one to recognize on reflection whether one's mental states are evidence for a proposition.
claimThe principle of Luminosity asserts that one's own mind is cognitively luminous, meaning that relying on introspection, one can always recognize on reflection what mental states one is in.
claimEvidentialism is classified as a form of mentalist internalism because it posits that evidence consists of mental states.
claimMentalist internalism posits that justification is internal because J-factors are always mental states.
claimIntrospection is defined as the capacity to inspect the inside of one's mind, allowing a person to know their own mental states such as being thirsty, tired, excited, or depressed.
claimAccording to privilege foundationalism, basic beliefs are restricted to introspective beliefs about a subject's own mental states, such as perceptual experiences, having a headache, being tired, feeling pleasure, or having a desire.
Quantum Approaches to Consciousness plato.stanford.edu Nov 30, 2004 11 facts
claimThe 'hard problem of consciousness' refers to the explanatory gap between third-person and first-person accounts of mental states.
claimA mental state that is stable with respect to perturbations activates a mental representation that encodes consciously perceived content.
claimAtmanspacher and beim Graben (2007) proposed the concept of 'downward constraints' to describe how mental states impose constraints on brain states, as an alternative to the concept of synchronic downward causation.
claimAn alternative model for mind-matter relations involves a third category, denoted as [mame], which is regarded as psychophysically neutral, meaning it is neutral regarding the distinction between material [ma] and mental [me] states.
claimMental states and properties are considered emergent if the material brain is neither necessary nor sufficient to explore and understand them.
perspectiveThe relevance of quantum processes for mental activity and their interactions with mental states remain unclarified.
claimThe relationship between mental and material states is discussed under the concept of 'downward causation,' as noted by Velmans (2002) and Ellis et al. (2011).
claimMind-brain correlations are synchronic rather than diachronic, meaning mental states are not causally conditioned by brain states, nor are brain states causally conditioned by mental states.
claimWhen mental states arise from partitions of neural states, the nature of mental processes depends strongly on the specific partition chosen.
claimThe view that mental states are emergent leads to a dualistic picture where residua remain when attempting to reduce the mental to the material.
claimImproperly constructed partitions of neural states can result in mental states and observables that resemble quantum behavior even if the correlated brain activity is entirely classical, a concept described as 'quantum mind without quantum brain.'
Consciousness (Stanford Encyclopedia of Philosophy/Fall 2025 ... plato.stanford.edu Jun 18, 2004 10 facts
claimNed Block (1995) defines access consciousness as a state where a mental state is conscious based on its availability to interact with other states and the access one has to its content, rather than its qualitative feel.
claimThomas Nagel (1974) defines a conscious creature as one where a mental state is conscious if there is something that it is like to be in that state, providing a first-person or internal conception of phenomenal or qualitative states.
claimA conscious mental state is defined by some philosophers as a mental state that an individual is aware of being in (Rosenthal 1986, 1996).
claimConscious states involving meta-mentality or meta-intentionality require that an individual possesses mental states that are themselves about other mental states.
claimThe term "conscious" is heterogeneous and applies to both whole organisms, referred to as "creature consciousness," and to specific mental states and processes, referred to as "state consciousness."
claimHigher-Order Perception (HOP) and Higher-Order Thought (HOT) theories of consciousness face the 'generality problem,' which questions why having a thought or perception of a mental state (like a desire or memory) makes that state conscious, when having a thought or perception of a physical object (like a rock or potato) does not make that object conscious.
claimEmpirical arguments challenge the causal status of meta-mental consciousness, specifically regarding the ability to report on one's mental state.
claimSome representationalists, such as Dretske (1995) and Lycan (1996), treat qualia as objective properties that external objects are represented as having, rather than as properties of mental states or representations.
claimUnconscious thoughts and desires are defined as mental states that an individual possesses without being aware of having them, whether due to simple inattention or psychoanalytic causes.
claimQualitative consciousness is defined as the property attributed when the adjective 'conscious' is applied in the qualitative sense to mental states.
Self-Consciousness - Stanford Encyclopedia of Philosophy plato.stanford.edu Jul 13, 2017 8 facts
claimRichard Moran argues that practical deliberation regarding how to act and feel requires reflection on one's own mental state.
claimThe sense of location, which is the sense that a mental state is located within one's own mind, can be understood as being possessed if one is aware of a mental state through introspection.
quoteTyler Burge wrote in 1996: "[t]o be capable of critical reasoning, and to be subject to certain rational norms necessarily associated with such reasoning, some mental acts and states must be knowledgeably reviewable."
claimP.F. Strawson claims that one can only ascribe mental states to oneself if one is capable of ascribing them to others, which implies that the capacity to think of others' mental states cannot be gained through analogical reasoning from one's own case.
claimPre-reflective self-awareness is defined as a state that does not require an individual to explicitly reflect on their own mental states or take them as objects of attention, remaining manifest even when attention is directed outwards toward worldly objects and events.
claimTheory theorists claim that individuals attribute mental states to both themselves and others by utilizing a tacitly held psychological theory.
claimA three-way distinction can be made between the sense of agency (the sense that one is the author of a mental state), the sense of ownership (the sense that one is the owner of a mental state), and the sense of location (the sense that a mental state is located within one's own mind).
claimDavid Hume's skepticism about self-perception is challenged by the observation that while Hume claimed he could find no self in introspection, he reported his findings in first-personal terms, indicating he was aware of his mental states as his own, as noted by Roderick Chisholm (1976).
Epistemic Justification – Introduction to Philosophy: Epistemology press.rebus.community 8 facts
claimInternalist theories of epistemic justification imply that if two individuals, Pat and Nat, have identical mental states and are introspectively identical, they are justified in believing the same propositions.
claimStrong foundationalists assert that justified basic beliefs are about one's own mental states or simple logical matters, and are justified because individuals are infallible regarding these matters.
claimStrong foundationalists require a principled method to differentiate between mental states that are infallible and those that are fallible.
claimA significant problem for Cartesian foundationalism is that propositions about external physical objects, such as 'that is a tree,' do not logically follow from propositions about mental states, such as 'it seems to me that that is a tree.'
claimInternalism entails that given a person's mental states at a specific time, there is a necessary fact settling which doxastic attitude that person is justified in having toward any proposition at that time.
claimExternalist theories of justification posit that justification depends on factors external to a person's mind, such as causes, processes, or functions, rather than solely on a person's mental states.
claimTherapeutic psychology challenges strong foundationalism by demonstrating that individuals can be mistaken about their own mental states, such as when a person denies being angry while exhibiting physical signs of anger.
claimExternalists claim that whether a person with a particular set of mental states justifiably believes a proposition p is contingent on factors external to the person's mind, meaning two people with identical mental states could differ in the justification of their beliefs.
Non-physicalist Theories of Consciousness cambridge.org Dec 20, 2023 7 facts
claimFranz Brentano declared intentionality to be 'the mark of the mental,' or the defining feature of mental states.
claimGeorge Berkeley argues that all that fundamentally exists are mental subjects and their ideas, where 'ideas' refers to mental states in general, including perceptions and thoughts.
claimOverdetermination dualism is compatible with physical causal closure, similar to epiphenomenalism, but differs by allowing mental states to affect physical states.
claimIntentionality is the property of consciousness where mental states, such as thoughts and intentions, are directed toward or about things or states in the world.
claimJerry Fodor argues that if mental states like wanting, itching, and believing are not causally responsible for physical actions like reaching, scratching, and speaking, then almost all human beliefs are false.
perspectiveEpiphenomenalists argue that non-epiphenomenalist theories, such as physicalism and interactionism, face the same improbability issues as epiphenomenalism because they must posit specific two-way psychophysical laws or identity relations to explain correlations between physical and mental states.
claimEpiphenomenalism implies that mental states have no physical effects, which suggests that humans lack the ability to cause physical actions, rendering them passive spectators of their own lives rather than actors.
Epistemology - Wikipedia en.wikipedia.org 5 facts
claimIntrospection is a process focused on internal mental states, such as feeling tired, as opposed to perception, which is focused on external physical objects, such as seeing a bus at a bus station.
claimOne conception of rationality holds that a mental state is rational if it is based on or responsive to good reasons.
claimEvidence is primarily conceptualized as mental states, such as sensory impressions or known propositions, but can also include physical objects like bloodstains or financial records.
claimSkepticism about other minds doubts the possibility of knowing the mental states of others.
claimInternalism and externalism debate whether justification is determined solely by mental states or also by external circumstances.
AI Sessions #9: The Case Against AI Consciousness (with Anil Seth) conspicuouscognition.com Feb 17, 2026 5 facts
claimNed Block supports the psychofunctionalist view of mental states.
claimGeneral functionalism posits that mental states are determined by the functional organization of a system, which can include internal causal structures not captured by an algorithm.
claimPsychofunctionalism defines mental states based on the functional roles they play in scientific psychology, rather than strictly by computational processes.
perspectiveHenry Shevlin defines computational functionalism as the view that mental states are individuated by their computational role.
claimAnalytic functionalism defines mental states based on everyday folk psychology, characterizing them through common understanding of how people form, hold, and lose mental states like beliefs.
The Hard Problem of Consciousness | Springer Nature Link link.springer.com 5 facts
accountOccasionalism and parallelistic views, such as those proposed by Leibniz or Spinoza, utilized a Divine principle to explain the correlation between mental and physical states to avoid the need for a naturalistic explanation.
claimThe rise of biology and neurosciences during the nineteenth and twentieth centuries allowed for an increasingly detailed association between neuronal processes and mental states, supporting the physicalist paradigm.
claimDavid Chalmers defines phenomenal qualities, or "qualia," as the qualitative feels or associated qualities of experience that make a mental state conscious.
quote“We can say that a being is conscious if there is something it is like to be that being, to use a phrase made famous by Thomas Nagel. Similarly, a mental state is conscious if it has a qualitative feel—an associated quality of experience. These qualitative feels are also known as phenomenal qualities, or qualia for short. The problem of explaining these phenomenal qualities is just the problem of explaining consciousness. This is the really hard part of the mind–body problem”
claimDavid Chalmers defines panpsychism as the thesis that some fundamental physical entities, such as quarks or photons, possess mental states, even if entities like rocks or numbers do not.
Epistemology | Internet Encyclopedia of Philosophy iep.utm.edu 4 facts
claimKnowledge is a mental state that exists within a person's mind, meaning unthinking entities cannot possess knowledge.
claimBelief is a mental state, and belief-formation is a mental process.
claimIn internalism, a belief is considered justified only if it is appropriately based upon or supported by other mental states.
claimAccording to internalism, the only factors relevant to determining whether a belief is justified are the believer's other mental states, such as beliefs about the world, sensory inputs, and beliefs about the relations between various beliefs.
Panpsychism - Stanford Encyclopedia of Philosophy plato.stanford.edu Jul 18, 2017 4 facts
perspectiveThomas Nagel concludes that there must be non-physical properties of basic matter that, when combined, intelligibly imply the existence of mental states.
claimPanpsychism is often incorrectly characterized as the belief that fundamental particles like electrons or quarks possess complex mental states such as hopes, dreams, or existential angst.
claimThe traditional view in analytic philosophy defines thoughts as mental states that can be modeled as psychological attitudes toward specific propositions, such as believing, hoping, or fearing.
claimThomas Nagel's argument for panpsychism relies on four premises: Material Composition (living organisms are complex material systems with no immaterial parts), Realism (mental states are genuine properties of living organisms), No Radical Emergence (all properties of a complex organism are intelligibly derived from the properties of its parts), and Non-Reductionism (mental states are not intelligibly derived from physical properties alone).
Hard Problem of Consciousness | Internet Encyclopedia of Philosophy iep.utm.edu 4 facts
claimFirst-order representationalism posits that mental states are conscious because they make subjects aware of sensory features, such as the redness of an apple, the sweetness of honey, or the shrillness of a trumpet.
claimDaniel Dennett argues that if a mental state is available to the mind via the 'global workspace,' it is a conscious state.
claimHigher-order theorists argue that mental states are conscious because a subject is appropriately aware of them through higher-order representation, while the higher-order representations themselves are considered nonconscious.
claimHigher-order representationalists contend that the awareness of mental states is a product of a specific type of representation that picks out the subject’s own mental states.
Good Old-Fashioned Artificial Consciousness and the Intermediate ... frontiersin.org Apr 17, 2018 4 facts
claimThe enactivist paradigm shifts the burden of explaining how material states become mental states onto the notion of the living organism, which the author argues is not a convincing conceptual fulcrum since vitalism has been dismissed.
quoteJohn Stewart stated: “How can a material state be a mental state? Hoary it may be, yet the problem is anything but solved. […] The paradigm of enaction solves this problem by grounding all cognition as an essential feature of living organism” (Stewart, 2010, p. 1).
referenceJohn R. Searle published 'Minds, Brains, and Science' in 1984, discussing the nature of mental states.
referenceJohn McCarthy published 'Making Robots Conscious of Their Mental States' online in 2002.
Unknown source 4 facts
claimThe functionalist view of mental states asserts that consciousness emerges from the functional organization of a system, rather than from any specific physical substance or property.
claimHigher-order consciousness is defined as an organism's explicit awareness of its own mental states, where the mental states themselves are the object of that awareness.
claimFunctionalism is a theory in the philosophy of mind asserting that mental states are defined by their function or role as a mental state, rather than by their internal constitution.
claimComputational functionalism asserts that mental states are defined and individuated by their computational role.
Self-Consciousness - Open Encyclopedia of Cognitive Science oecs.mit.edu Jul 24, 2024 3 facts
claimTheory of Mind (ToM) is based on mental states such as beliefs, desires, hopes, and fears, and posits that humans understand and predict the behavior of other social beings by attributing these mental states to them and utilizing implicit knowledge of how these states interact to generate behavior.
claimAccording to the simulationist approach, individuals derive judgments about the mental states of others by using analogy from the mental states they believe they would have in comparable situations, and then use these judgments as inputs for their own decision-making processes run offline to predict the behavior of others.
quoteGopnik and Meltzoff (1994, p. 168) stated: “Even though we seem to perceive our own mental states directly, this direct perception is an illusion. In fact, our knowledge of ourselves, like our knowledge of others, is the result of a theory, and depends as much on our experience of others as on our experience of ourselves.”
Epistemology (Stanford Encyclopedia of Philosophy/Fall 2019 Edition) plato.stanford.edu Dec 14, 2005 3 facts
claimIndirect realists argue that foundational perceptual knowledge consists of knowledge of sense data and other mental states, while knowledge of external objects is indirect and derived from that foundational knowledge.
claimSense data are a species of mental states that enjoy a special status because individuals know directly what they are like.
claimIntrospection allows individuals to identify their current mental states, such as thirst, fatigue, excitement, or depression.
Non-Reductive Physicalism - Theories of Consciousness theoriesofconsciousness.com 3 facts
claimNon-reductive physicalism occupies a middle ground between reductive physicalism, which claims mental states are identical to physical states, and dualism, which posits mental substances separate from physical reality.
claimDownward causation is the theory that mental states can causally influence physical states without violating physical laws.
claimGeorge Ellis argues that mental states, as emergent patterns in neural systems, exert genuine causal influence by constraining and guiding neural activity through feedback loops, without violating physical laws.
Good Old-Fashioned Artificial Consciousness and the Intermediate ... pmc.ncbi.nlm.nih.gov Apr 18, 2018 2 facts
Naturalistic Epistemology | Internet Encyclopedia of Philosophy iep.utm.edu 2 facts
claimInternalists hold that a belief is justified only if it is appropriately related to other mental states, whereas externalists hold that justification comes at least partly from external factors, such as the reliability of the process that generated the belief.
claimThe debate between internalists and externalists in epistemology concerns whether factors other than mental states contribute to the justification of beliefs.
Dualism, Physicalism, and Philosophy of Mind - Capturing Christianity capturingchristianity.com Dec 11, 2019 2 facts
claimNeuroscience has revealed increasingly sophisticated correlations between human brain states and mental states.
claimProperty dualism claims that at least some mental states are not reducible to physical states, meaning conscious beings instantiate two radically different kinds of properties—mental and physical—neither of which is reducible to the other.
What Is Epistemology? Pt. 3: The Nature of Justification and Belief philosimplicity.com Oct 23, 2017 2 facts
claimInternalism is a theory of justification which posits that everything required to justify a belief is accessible to a person within their own mind, such as mental states or sensory inputs.
claimThe Internal-External (IE) debate is a major contemporary debate in epistemology concerning whether justification for beliefs comes from internal mental states or external conditions.
Self-awareness, self-regulation, and self-transcendence (S-ART) frontiersin.org 2 facts
referencePractitioners are encouraged to call to mind various beneficial and detrimental mental states to maintain awareness of how specific behavior patterns affect feelings, which motivates sympathy and compassion for others experiencing negative mental states.
referenceMindful awareness is applied across four domains of experience: the body, feelings or affective tone, current mental states, and the matrix of interrelationships among all phenomena arising in consciousness.
A Functionalist Perspective on AI and Consciousness | by Ethan Shen medium.com Jul 23, 2024 2 facts
claimArtificial intelligence systems could theoretically realize mental states if the systems can replicate the necessary functional roles.
claimThe functionalist view of mental states aligns with the proposition that artificial intelligence systems could theoretically realize mental states if the systems can replicate the necessary functional roles.
Panpsychism (Stanford Encyclopedia of Philosophy/Fall 2015 Edition) plato.stanford.edu May 23, 2001 2 facts
claimGottfried Wilhelm Leibniz posited that almost all mental states are unconscious, and that low-level monads do not aspire to consciousness, which he termed apperception.
claimJean Piaget (1929) suggests that human children pass through an animist phase where they naturally attribute mental states to a wide variety of objects.
Hard problem of consciousness - Wikipedia en.wikipedia.org 1 fact
claimEliminative materialism (or eliminativism) is the philosophical view that mental states used in folk psychology do not correspond to real brain mechanisms upon scientific examination.
Psychology and Cognitive Science on Consciousness klinikong.com 1 fact
perspectiveBehaviorism focuses on observable behaviors rather than internal mental states.
Naturalized Epistemology - Stanford Encyclopedia of Philosophy plato.stanford.edu Jul 5, 2001 1 fact
claimTraditional epistemologists often assume that evidence for beliefs about the mental states of others consists primarily of observations of their behavior, then question whether that evidence is sufficient to justify those beliefs.
Epistemological Problems of Testimony plato.stanford.edu Apr 1, 2021 1 fact
claimDevelopmental psychology literature suggests that individuals with autism often acquire the ability to recognize higher-order mental states much later in life, or potentially not at all.
[PDF] Consciousness, Embodiment, and Artificial Intelligence digitalcommons.ncf.edu 1 fact
claimThe functionalist view of mental states posits that conscious mental states supervene on specific organizational structures in the brain and their respective functional mechanisms.
Moving Forward on the Problem of Consciousness - David Chalmers consc.net 1 fact
claimDavid Chalmers clarifies that his use of Shannonian information is not an attempt to reduce mental states to information processing, but rather an attempt to identify a potential key to the physical basis of consciousness.
The science of self-awareness: Neural and computational models of ... youtube.com Mar 11, 2022 1 fact
claimThe ability to reflect on and report one's own experiences, characterized as self-awareness of mental states, is a defining feature of being human.
Attention and consciousness - SelfAwarePatterns selfawarepatterns.com Jun 12, 2022 1 fact
claimThe ability to report on a mental state usually requires attending to that state in some fashion.
The evolution of human-type consciousness – a by-product of ... frontiersin.org 1 fact
claimHigher-order theories of consciousness, initially proposed by David Rosenthal in 1993 and reviewed by Rocco J. Gennaro in 2004, suggest that a mental state becomes conscious when a supplementary level of processing, such as perception or thought, occurs.
David Chalmers on the meta-problem of consciousness selfawarepatterns.com Apr 6, 2019 1 fact
claimDavid Chalmers contrasts the 'hard problem of consciousness' with 'easy problems' of consciousness, which include discriminating between environmental stimuli, integrating information, and reporting on mental states.
The Problem of Hard and Easy Problems cambridge.org Mar 31, 2023 1 fact
referenceFunctionalist theories of the mind, as discussed by McLaughlin (2006), define mental states as causal relations between stimuli, other mental states, and behavioral responses, where a function acts as a causal mediator.
Research - Keith Frankish keithfrankish.com 1 fact
claimKeith Frankish argues that the folk-psychological term 'belief' refers to two distinct types of mental state, which possess different properties and support different kinds of mental explanation.
(PDF) Quantum Mechanics and Consciousness - Academia.edu academia.edu 1 fact
claimQuantum nonlocality suggests the existence of holistic connections between consciousness and memory, with researchers like Umezawa and collaborators correlating mental states with quantum collective behavior.
The Evidence for AI Consciousness, Today - AI Frontiers ai-frontiers.org Dec 8, 2025 1 fact
referenceHigher-order theories of consciousness (HOT) posit that mental states are conscious if the subject is aware of that state, which implies the ability to think about how one is thinking.
The Mechanisms of Psychedelic Visionary Experiences - Frontiers frontiersin.org Sep 27, 2017 1 fact
claimHuman adaptive assumptions of an "unseen other" are augmented by projective assumptions regarding social, dominant, and all-seeing others, as well as the mental states of these others.
Resolving the evolutionary paradox of consciousness link.springer.com Apr 1, 2024 1 fact
claimThe author does not discuss analytic functionalism because it defines mental states solely by their functions, such as defining pain as the state that tends to be caused by bodily injury.
Consciousness in Artificial Intelligence? A Framework for Classifying ... arxiv.org Nov 20, 2025 1 fact
claimMost researchers agree that mental states in the brain are neither a manner of speech nor derived from an interpretative stance.
Evolutionary Psychology | Internet Encyclopedia of Philosophy iep.utm.edu 1 fact
referenceThe 'Computational Theory of Mind', developed by philosophers such as Hilary Putnam and Jerry Fodor, conceives of mental states as relations between a thinker and symbolic representations, and mental processes as formal operations on the syntactic features of those representations.
The Evidence for Functionalism—On Intelligence, Consciousness ... medium.com May 2, 2025 1 fact
claimThe author of the article 'The Evidence for Functionalism—On Intelligence, Consciousness, and the End of Metaphysical Excuses' asserts that no one has provided evidence that mental states can exist independently of causal roles.
The Conscious Mind - Wikipedia en.wikipedia.org 1 fact
claimDavid Chalmers asserts that every mental state can be described in psychological terms, phenomenological terms, or both.