In the fields of philosophy and psychology, awareness is the knowledge or perception of something. As such, it is the ability to consciously perceive, understand, and respond both generally to one's surroundings and specifically to individual stimuli. The concept is often synonymous with consciousness; however, one can be aware of something without being explicitly conscious of it (e.g., blindsight). Essentially, awareness is the state of being attuned to, or mindful of something, whether it is a physical sensation or an idea. The states of awareness are also associated with the states of experience, so that the structure represented in awareness is mirrored in the structure of experience.
Definition Awareness is a broad term for subjective experience, cognitive access to information, or the ability to notice and understand internal and external events. Its precise definition is disputed and varies by context and discipline.
Awareness is typically characterized as awareness of something: it is about or directed at certain contents. For example, when a person consciously perceives a tree or hears a voice then the tree or voice becomes a content of their awareness. Awareness is not limited to perceptual objects in the environment but also includes internal states, such as bodily sensations of warmth, emotions, desires, intentions, judgments, and thoughts about abstract ideas. The expression aware that is often used in a factive meaning, according to which one can be aware only of things that are real. In a broader sense, awareness also encompasses contents that do not accurately represent reality or are not believed to be true, such as imagined scenarios, dreams, and hallucinations.
Which contents enter awareness is influenced by various factors, including the external situation; the strength and novelty of stimuli; and the individual's attention, goals, expectations, and memories. The different contents are typically not presented as isolated phenomena but are embedded in a broader context of meaningful patterns, including information about their emotional significance to the individual and practical implications for behavior and decision-making. In this regard, awareness often involves an active interpretation that organizes and evaluates information rather than an impartial, passive representation.
Some characterizations understand awareness as an all-or-nothing phenomenon: it is either fully present or fully absent. Another outlook regards awareness as a gradual state that can arise in different degrees. This view reflects the idea that one can be aware of more or less contents at the same time and that those contents can have varying degrees of clarity, vagueness, and uncertainty. Awareness contrasts with unawareness, which is a lack of subjective experience or knowledge. Unawareness can apply to specific contents of experience, like when a person is unaware of a background noise, or to a complete absence of awareness, which may be the case during dreamless sleep or coma. Certain forms of cognition occur without awareness, such as low-level neural processes underlying face recognition and language processing.
Awareness plays a central role in everyday life by helping individuals perceive and respond to their surroundings, making information available to cognitive processes such as reasoning and reflection, and allowing individuals to monitor and regulate their behavior by modifying automatic responses or engaging in deliberate actions. It is studied in several fields, including philosophy, psychology, and neuroscience. Research is not limited to human awareness but also addresses the awareness of nonhuman animals.
The term awareness originated from the Old English word , which has Germanic roots. The Old English term entered Middle English as the word , which developed into the modern English adjective aware. The noun awareness was formed by adding the suffix -ness, with the earliest known use in the 1830s in the work of the physician and writer David Macbeth Moir.
Relation to consciousness Awareness is closely related to phenomenal consciousness and the terms are often used as near synonyms. Understood in this sense, awareness is characterized as subjective experience that involves a first-person perspective on oneself and the environment. It is not merely the availability of information but also includes a phenomenal dimension or experiential character of what it feels like to encounter the contents of awareness.
However, the terms awareness and consciousness are not always treated as synonyms, and some theorists explicitly distinguish between them. According to one view, awareness is access to mental contents that makes information available or a set of cognitive and behavioral capacities through which individuals acquire, process, and use information. These capacities can include the abilities to respond to environmental stimuli; to discriminate between objects; to store, retrieve, and interpret information; to formulate plans of action; and to report one's mental states. According to one interpretation, this function-based characterization implies that any biological or artificial system with the relevant capacities can be described as aware, regardless of whether it has phenomenal consciousness. In this sense, it is possible to distinguish between conscious awareness, which is accompanied by subjective experience, and unconscious awareness, which involves cognitive processes without phenomenal consciousness. For example, the medical condition of blindsight, in which people with brain damage lose visual consciousness but can still respond to certain forms of visual information, is sometimes suggested as an example of unconscious awareness.
Other related concepts Awareness is closely related to attention, a process or ability that selects certain contents and positions them at the center of awareness. Attention prioritizes certain objects or features while filtering out irrelevant contents, thereby focusing cognitive resources on aspects considered relevant. Awareness is not limited to the focus of attention and includes peripheral contents that are noticed but remain in the background. For example, a person may focus attention on a laptop while remaining peripherally aware of an ashtray in the corner of their desk.
Wakefulness, another connected concept, is a condition of being alert and responsive to one's environment rather than being asleep, anaesthetized, or in a coma. Awareness is typically associated with wakefulness but may also occur without it, as when a person is dreaming and aware of the dream scenario. It may also be possible to be awake without being aware; for example, a person in a vegetative state with severe brain damage may still undergo sleep–wake cycles while lacking signs of awareness.
The concept of awareness further overlaps with those of perception, knowledge, and sentience. Perception organizes and interprets sensory information about the world, including visual and auditory impressions. It is a central form of awareness but not the only one, since people can also be aware of internal states, such as emotions and thoughts. Knowledge is often characterized as a cognitive achievement, such as a true belief based on good reasons. Awareness overlaps with knowledge in this sense and can be a source of knowledge. However, awareness can also present inaccurate contents, such as hallucinations. Sentience is usually defined as the capacity to experience positive or negative feelings, such as pleasure and pain. Awareness can involve sentience in this sense but may also include contents other than feelings.
Forms External and internal Many forms of awareness are discussed in the academic literature, often distinguished by the types of content they present. External awareness, or exteroception, is awareness of one's environment. It is primarily tied to the five senses, which are different modes of perceiving things outside oneself: seeing, hearing, touching, tasting, and smelling. Impressions from these sensory modes are typically integrated into a unified awareness of the objects and events around oneself and their relative spatial locations. External awareness helps individuals gather information about the world, respond to changes in their surroundings, and navigate their environment. Direct and indirect realists debate whether the contents of external awareness are material objects themselves or representations mediating between perceiver and objects, such as sense data.
Inner awareness encompasses one's own body and mental states. Like external awareness, bodily awareness is multimodal, involving diverse senses and elements. They include proprioception associated with the position and movement of one's limbs and other body parts; the vestibular sense covering balance, orientation, and self-location; interoception concerning internal physiological states such as hunger, thirst, breathing, heartbeat, and temperature; pain; tactile sensations; and a sense of bodily ownership and ability to act. Bodily awareness allows individuals to monitor their internal states, regulate physiological needs, and coordinate their movements. An influential classification divides these elements into two categories: bodily sensations, which affect specific regions of the body, such as pain in a foot and an itch behind an ear; and bodily feelings, which are experienced as diffuse states not confined to particular body parts, such as thirst and fatigue. Another taxonomy contrasts high-level body awareness, which involves conceptual or emotional representations of the body, with low-level body awareness, which involves more immediate sensorimotor information often directly relevant to action.
Another type of inner awareness concerns knowledge of one's own mental states, including thoughts, memories, beliefs, emotions, desires, intentions, and mental images. Introspection is the process of examining one's mental states, as when a person recognizes that they are imagining a specific scenario, entertaining a particular thought, or feeling anxious about the outcome of an event. Understood in a broad sense, introspection covers all forms of inner awareness of the mind. Understood more narrowly, it is an explicit or reflective form of inner awareness in which a person deliberately attends to psychological events, in contrast to pre-reflective forms of inner awareness, which occur without introspection.
Both external and inner awareness are sources of knowledge. Academic debates assess and compare their reliability. External awareness can present false information in the form of illusions, as in the Müller-Lyer illusion, in which one line appears longer than another although both have the same length. A traditionally influential view holds that many forms of inner awareness are immune to error, for instance, that it is impossible to be aware of pain without being in pain. This view has been challenged in the contemporary discourse. One suggested counterexample is that a person may mistake a sensation of coldness for pain, leading them to believe that they are in pain when they are not. A more limited proposal restricts the immunity to a specific type of error: error through misidentification. This view holds that a person cannot be wrong about whether they, rather than someone else, are undergoing the experience. Such errors are possible in external awareness. For example, when a person in an accident sees a broken arm, they may falsely assume that it is their own arm.
Self