What does situational awareness include

Situational awareness is often described as if it were a single skill — something you either have or you don't. In reality, it is a set of cognitive components working together: what you notice, what you make of it, and what you expect to happen next. Understanding what situational awareness includes means looking past the buzzword and examining the moving parts behind it, from attention and working memory to the mental models built through experience.

That breakdown matters because most people overestimate how aware they actually are. Feeling alert is not the same as tracking the right cues, and a calm, familiar environment can quietly hide gaps that only surface when something goes wrong. The same limits apply whether you are driving through traffic, managing a busy shift, or stepping onto a jiu-jitsu mat for the first time.

This article walks through the components that make up situational awareness, the three levels that structure it, and the practical constraints — cognitive load, attention, and memory — that shape how well it holds up under pressure. It also covers how to check your own awareness before acting, and why shared awareness across a team behaves differently from the individual kind.

What Is Situational Awareness: Definition and Origins of the Concept

Situational awareness is the ability to perceive the elements in your environment, understand what they mean as a whole, and project how the situation will evolve in the coming moments. The term emerged in military aviation during World War II, when pilots had to track enemy aircraft positions, weather conditions, and the state of their own machines simultaneously — and it gained renewed traction in the 1980s through the work of psychologist Mica Endsley, who formalized the three-level model still used today as a reference in occupational safety, healthcare, defense, and combat sports.

In practice, this is neither an innate talent nor a passive state of alertness. It is an active cognitive process built from directed attention, working memory, and mental models accumulated through experience. A jiu-jitsu practitioner who anticipates an opponent's sweep attempt before the movement even begins is exercising situational awareness — and the same mechanism operates in a nurse who notices a subtle change in a patient's breathing or a driver who spots a distracted pedestrian three cars ahead.

The Difference Between Situational Awareness, Perception, and Sensemaking

Perception is the first step: capturing stimuli through the senses — seeing, hearing, feeling. Situational awareness goes further because it requires assigning meaning to what was perceived in relation to a goal. Sensemaking, in turn, is a retrospective and narrative process: after something has happened, a person builds a coherent explanation for the event. Situational awareness operates in the present and looks forward; sensemaking looks back.

This distinction matters because many assessment errors occur when someone confuses perceiving with understanding. Seeing an opponent shift their base of support is perception; understanding that this shift precedes a hip throw is situational awareness. An emergency response team that merely logs isolated signals — smoke, noise, temperature — without integrating them into a unified picture does not yet have shared situational awareness, only fragmented perception.

The Three Levels of Endsley's Model: Perception, Comprehension, and Projection

Mica Endsley's model, published in 1995 in the journal Human Factors, divides situational awareness into three hierarchical levels. They are sequential and interdependent: you cannot comprehend what you have not perceived, nor project what you have not comprehended. A failure at any level compromises the ones that follow.

The model was not designed for sports, but it accurately describes what happens during a guard exchange in jiu-jitsu, a passing maneuver in traffic, or a clinical decision. That is why it appears in commercial aviation training, operating rooms, air traffic control centers, and, increasingly, in development programs for athletes and tactical teams.

Level 1 — Perception of Elements in the Environment

The first level requires detecting the relevant elements: position, movement, sound, temperature, distance, equipment status, and the behavior of other people. The limitation here is physiological and attentional — the human brain consciously processes only a fraction of available stimuli, and whatever does not enter attention simply does not exist for situational awareness.

Classic selective attention studies, such as Simons and Chabris's "invisible gorilla" experiment (1999), show that even obvious stimuli go unnoticed when attention is focused on another task. On the mats, this means a beginner sees only what is directly in front of their eyes — the arm the opponent extends — and misses the base, the hips, and the angle of the feet, elements that a purple belt registers without conscious effort.

Level 2 — Comprehension of Meaning and Pattern

Comprehension is integrating perceived elements into a meaningful pattern. It is not enough to see three isolated indicators; you must recognize that, together, they point to a threat, an opportunity, or a shift in the scenario. This level depends heavily on mental models — knowledge structures built through training and repeated exposure to similar situations.

An experienced firefighter entering a burning building does not process smoke, flame color, and structural sounds as separate data points: they recognize a pattern of collapse risk. Likewise, a fighter who feels the opponent shift weight onto the heel recognizes the precursor to a takedown — not because they saw a new signal, but because the complete pattern activated an already consolidated mental model.

Level 3 — Projection of Future States

The highest level is the ability to anticipate what will happen in the next seconds, minutes, or hours based on comprehension of the current state. It is the difference between reacting and anticipating. Projection allows a fighter pilot to position where the enemy will be, not where they are, and allows a surgeon to prepare the next move before the previous one is finished.

In combat training, projection is what separates the practitioner who merely defends from the one who dictates the fight. Someone who projects accurately does not wait for a submission to arrive and then escape — they remove the condition that would allow the submission one or two moves earlier. This ability is trainable and depends less on reflexes than on structured exposure to progressive scenarios.

What Situational Awareness Includes in Practice: Observable Components

Situational awareness is not an abstract concept: it manifests in observable behaviors and measurable cognitive capabilities. The practical components include the quality of visual scanning, the richness of available mental models, working memory management, and the efficiency of team communication. Each of these elements can be trained in isolation, which makes the concept useful for development programs in any sector.

Attention and Environmental Scanning

Efficient scanning is selective and cyclical, not fixed or random. Trained professionals alternate between focusing on a critical point and broad sweeps of the environment at regular intervals. In aviation, the instrument scanning pattern is taught as a specific sequence; in combat, the gaze moves between hands, hips, feet, and the surrounding space in cycles of a few seconds.

Scanning quality depends on two factors: breadth (how many elements are covered) and frequency (how quickly the cycle repeats). A broad but slow scan misses rapid changes; a fast but narrow scan misses context. Effective training works both axes simultaneously, starting with low-complexity environments and increasing the stimulus load progressively.

Mental Models and Prior Experience

Mental models are cognitive shortcuts that allow pattern recognition without processing every detail from scratch. An experienced driver does not separately analyze another driver's trajectory, speed, and hand position — they recognize the "about to change lanes without signaling" pattern and adjust their own position before the movement happens.

These models are built through repeated exposure and feedback. The more varied the repertoire of lived situations — or realistically simulated ones — the faster and more accurate the pattern recognition. This explains why professionals with decades of practice make correct decisions in fractions of a second without being able to verbalize their reasoning: the mental model fires before conscious analysis.

Working Memory and Cognitive Load

Working memory is the temporary mental space where perceived information is held and manipulated. It has limited capacity — George Miller's classic 1956 estimate points to about seven items, but more recent research suggests an even lower limit, closer to four chunks of information. When cognitive load exceeds this limit, situational awareness degrades rapidly.

Managing cognitive load includes grouping information into meaningful chunks, automating routine tasks to free up working memory, and reducing irrelevant stimuli. A jiu-jitsu black belt does not spend working memory thinking about how to establish a grip — the movement is automated — and therefore can keep attention on the overall pattern of the fight. The beginner, by contrast, exhausts working memory on motor details and loses sight of the whole.

Communication and Shared Situational Awareness in Teams

In teams, situational awareness stops being individual and becomes distributed: each member perceives a part of the environment, and the complete picture only exists if communication is efficient. Shared situational awareness includes not only what each person knows, but what each person knows that others know — and what the team as a whole is doing with that information.

• Standardized language for describing positions, threats, and states

• Explicit confirmation of receipt and understanding (closed-loop communication)

• Continuous updating of the common picture, not just at the start of the task

• Defined roles for who observes what, avoiding redundancy and gaps

Emergency response teams train structured communication precisely because shared situational awareness does not emerge spontaneously from the sum of individual perceptions. It requires protocols, repetition, and a culture in which any member — regardless of hierarchy — can point out information that changes the picture.

Factors That Degrade Situational Awareness

Situational awareness is fragile. It degrades under specific and predictable conditions, and most preventable accidents result from the combination of two or more of these factors. Recognizing them is the first step toward mitigating them, both in work environments and in everyday risk activities.

Digital Distractions and Information Overload

Phone notifications, simultaneous screens, and continuous message streams compete directly with attention directed at the physical environment. Research on divided attention shows that switching between tasks — even for fractions of a second — imposes a switching cost that degrades performance in both activities. In traffic, using a phone while driving multiplies accident risk to levels comparable to driving under the influence of alcohol, according to consolidated road safety data.

Information overload does not come only from devices: environments with excessive stimuli — noise, movement, screens, conversations — saturate working memory and reduce the ability to perceive what actually matters. The solution is not to eliminate all information, but to actively filter what is relevant to the goal of the moment, a skill that is trained through deliberate practice.

Fatigue, Stress, and Complacency

Fatigue reduces the ability to maintain regular scanning cycles and increases the tendency to fixate attention on a single point. Acute stress, in turn, narrows the attentional field — the so-called tunnel effect — and impairs the integration of peripheral information. Both act directly on Level 1 of Endsley's model, compromising the foundation on which comprehension and projection are built.

Complacency is a subtler degrader: it appears when the repetition of incident-free situations generates a false sense that the risk has diminished. Experienced professionals who stop scanning the environment because "nothing ever happened" are exactly at the point of greatest vulnerability. Complacency does not reduce the real risk — it only reduces the perception of it.

Blind Spots and Confirmation Bias

Blind spots are areas of the environment that a person systematically fails to observe, due to physical limitations of the visual field or attentional habit. Confirmation bias aggravates the problem: once a hypothesis about what is happening is formed, the brain tends to seek and value information that confirms it, ignoring signals that contradict it.

• Fixating on the first plausible explanation and discarding alternatives

• Seeking only data that confirm the initial assessment

• Ignoring weak signals that contradict the active mental model

• Attributing unexpected changes to someone else's error instead of revising one's own picture

In combat, confirmation bias appears when a fighter insists on a technique that is not working because it "should work," ignoring the adjustments the opponent has already made. In occupational safety, it appears when a supervisor interprets an anomalous noise as "it has always been like that" instead of investigating the cause. Correction requires a deliberate habit of actively seeking information that might be wrong.

How to Measure and Train Situational Awareness

Situational awareness can be measured and trained, although no single universal metric exists. The consensus in the human factors literature points to combining three types of measurement — objective, subjective, and behavioral — as the most robust approach. Training, in turn, follows principles of progressive exposure, immediate feedback, and simulation of scenarios with increasing complexity.

Objective, Subjective, and Behavioral Measures

Objective measures assess what a person knows about the situation at a specific moment. The best-known technique is SAGAT (Situation Awareness Global Assessment Technique), developed by Endsley, which freezes a simulation at random intervals and asks questions about the state of the environment. Answers are compared with the actual state recorded by the system, generating an accuracy score.

Subjective measures ask the person themselves how much they think they perceived and understood — and are notoriously imprecise, because self-perception of situational awareness tends to be overestimated. Behavioral measures observe indirect indicators: reaction time to peripheral stimuli, frequency and breadth of visual scanning, number of anticipation errors. Combining the three compensates for the limitations of each in isolation.

Training Exercises and Protocols by Sector

Effective training follows a common pattern across sectors: start with low-complexity scenarios, provide immediate and specific feedback, gradually increase stimulus load and time pressure, and include variations that break expectations. In aviation, this translates into hours of simulator time with injected failures; in medicine, into emergency simulations with high-fidelity mannequins; in sports, into sparring with progressive rules.

1. Establish a baseline: measure situational accuracy before training

2. Train structured scanning: regular cycles of broad and focused attention

3. Inject unexpected events into scenarios to break complacency

4. Immediate debriefing: compare what the person perceived with what actually happened

5. Repeat with variations until pattern recognition becomes automated

Structured debriefing is perhaps the most underestimated component. It works as a mirror that reveals the difference between what a person thinks they perceived and what the objective record shows actually happened — and it is exactly this gap that, when exposed repeatedly, recalibrates self-perception and improves real accuracy.

Situational Awareness in Real-World Contexts

The concept applies to any activity where decisions must be made in dynamic environments, with incomplete information and relevant consequences. The contexts below illustrate how the same three levels — perception, comprehension, and projection — operate in different domains, with specific demands and protocols.

Workplace and Occupational Safety

In industrial operations, construction, and logistics, situational awareness is the first line of defense against accidents. Trained workers maintain active scanning of moving equipment, nearby colleagues, surfaces, and changes in the sound environment. Loss of situational awareness is documented as a contributing factor in a significant portion of serious occupational accidents, especially those involving machinery and vehicles in shared areas.

Effective safety programs do not limit themselves to training PPE use: they train environmental reading, real-time risk communication, and the deliberate pause when the picture changes. The pause — interrupting the task to reassess — is a cheap and powerful protocol that prevents the automatic continuation of an activity when conditions are no longer the same.

Healthcare and Clinical Decisions

In clinical practice, situational awareness involves integrating vital signs, history, medications, patient expression, and subtle changes over time into a unified picture. Intensive care nurses develop the ability to detect clinical deterioration before alarms go off — a classic example of Level 3 projection built on fine perception and clinical mental models.

Situational awareness errors in healthcare often involve fixation on an initial diagnosis and failure to incorporate new data that contradict it. Protocols such as SBAR (Situation, Background, Assessment, Recommendation) were created precisely to structure communication between professionals and ensure that the situational picture is transmitted completely and without ambiguity.

Aviation, Driving, and High-Risk Operations

Aviation is the birthplace of the concept and remains the sector where it is most formally trained and evaluated. Pilots are taught to maintain a continuous cycle of instrument scanning, communication with the tower, and observation of the external environment, with explicit protocols for declaring loss of situational awareness — a practice that aviation safety culture normalizes as a virtue, not a failure.

In vehicle driving, situational awareness manifests in anticipating other drivers' behaviors, reading road and weather conditions, and managing blind spots. Professional drivers train systematic mirror scanning at regular intervals and develop mental models for risk patterns — such as the vehicle drifting within its lane or the pedestrian looking at their phone while approaching a crosswalk.

Public Safety, Defense, and Cybersecurity

In public safety, a patrol officer's situational awareness includes reading body language, mapping escape routes, positioning for cover, and assessing the emotional state of the people involved. Training uses progressive force scenarios and post-incident debriefing to calibrate threat perception — avoiding both under-reaction and unnecessary escalation.

In cybersecurity, the concept migrates to the digital domain: SOC (Security Operations Center) analysts monitor multiple data feeds and must distinguish noise from signal, recognize attack patterns, and project the likely trajectory of an intrusion. Alert overload is the main degrader in this context — a direct parallel to information overload in physical environments, requiring the same solutions of active filtering and prioritization by relevance.

Common Mistakes When Assessing Your Own Situational Awareness

The most frequent — and most dangerous — mistake is overestimation. Most people believe they perceive more than they actually do, and this gap between self-perception and real accuracy is consistently documented in studies comparing subjective and objective measures. Those who think they have good situational awareness tend to train less, scan less, and question their own picture less.

Another common mistake is confusing familiarity with awareness. Being in a known environment for years generates a sense of control that does not correspond to the actual perception of what is happening now. Familiarity reduces attentional effort — the brain saves energy by assuming everything remains the same — and that is exactly where subtle changes go unnoticed. The third mistake is retrospective evaluation: after something goes wrong, a person reconstructs the memory saying "I knew it was going to happen," when in fact they projected nothing at the time. This hindsight bias prevents learning because it eliminates the discrepancy that debriefing should reveal.

How to Apply Situational Awareness in Daily Life

Applying situational awareness in everyday life does not require turning every moment into a vigilance exercise. It requires creating simple, sustainable habits that keep attention connected to the environment, especially during transition moments — entering a new place, starting a task, switching activities. These are the transition points where attention tends to remain stuck in the immediate past, and that is where deliberate scanning makes the most difference.

A practical self-assessment protocol, applicable before acting in any risk situation or relevant decision, follows three questions: what am I perceiving right now that is relevant to my goal? What do these elements, together, mean? What is likely to happen in the next few moments — and what would I do if the scenario changed? The third question is the most ignored and the most valuable, because it forces the brain out of reactive mode and into anticipatory mode.

• Before entering a new environment, scan exits, people, and movement for 10 seconds

• In traffic, alternate your gaze between the vehicle ahead, the mirrors, and the horizon every few seconds

• In important conversations, observe body language and tone, not just words

• When you notice something "doesn't seem right," stop and name what specifically is different

• After any incident or near-miss, do an honest debriefing: what did I perceive, what did I miss, what would I project differently

For those who train martial arts, situational awareness is developed in a structured way on the mats — and it is one of the skills that transfers most readily beyond them. Jiu-jitsu training demands exactly the three levels of Endsley's model: perceiving bases, grips, and angles; comprehending the pattern of the opponent's intention; and projecting the next movement before it happens. Programs for adults that include progressive sparring and feedback from experienced instructors accelerate this construction of mental models in a way that is difficult to replicate in solo training. For those looking to develop this capacity in a structured environment, it is worth exploring the best BJJ classes for adults in Houston and understanding how regular practice transforms reactive attention into anticipatory reading.