There’s a phrase that gets thrown around constantly in simulation-based education: “We need higher fidelity to make things as real as possible…”
Usually, what follows is a shopping list.
A more advanced (often expensive) mannequin.
A more realistic monitor.
Better/more moulage.
Real medications.
More authentic sounds.
A fully replicated patient room.
And to be fair, realism can matter. Sometimes a lot. But somewhere along the way, many simulation programs quietly adopted the assumption that greater realism automatically equates to better learning. Arrrrrrrgh, that drives me crazy!
In fact, sometimes increasing fidelity actually makes learning worse. That statement tends to make people uncomfortable because simulation professionals have spent decades raising fidelity. The field matured, becoming more immersive, sophisticated, and technologically advanced. In the early days, we fought hard to move beyond static task trainers and role play in empty classrooms.
But once you’ve become a more experienced simulationist and spent enough time designing scenarios, debriefing learners, and watching people struggle cognitively inside simulations, you eventually realize something important:
- The educational value of simulation is not determined by how real it looks.
- It’s determined by how effectively the design supports the learning objectives.
- And those are not always the same thing.
The Fidelity Trap
One of the biggest traps in simulation design is confusing physical fidelity with educational effectiveness. Physical fidelity refers to how closely the simulation resembles reality in terms of sensory experience.
Does the mannequin blink?
Does the skin look real?
Do the vital signs respond realistically?
Is the environment visually authentic?
Those things can absolutely enhance immersion. But immersion alone is not the outcome we care about. The learning outcome is. And guess what……. sometimes we create incredibly realistic environments that overload learners with information that has little to do with the actual objective. This is where cognitive load starts to matter. If learners are spending mental energy figuring out how to operate unfamiliar equipment, interpreting distracting environmental details, or navigating unnecessary complexity, that cognitive bandwidth is no longer available for the target learning task. See my old blog post on the cognitive third space of simulation.
The simulation may feel impressive while simultaneously being educationally inefficient. And let’s face it, some of the theatrics we create are just plain fun. However, I’ve seen beautifully designed simulation rooms derail learning because participants became preoccupied with finding supplies, managing irrelevant noise, troubleshooting technology, or reacting to dramatic elements that had little connection to the intended objectives.
The learners may walk away saying: “Wow, that felt real.” But when you dig deeper, the real question is, can they clearly articulate what they actually learned, meaning do they know what they did well and where their opportunity for improvement lies?.
Functional Fidelity Matters More Than Physical Fidelity
One of the most overlooked concepts in simulation is functional fidelity. Functional fidelity asks a much more important question: “Does the simulation behave in a way that supports the intended learning?” That’s very different from asking whether the situation looks real.
A plastic airway trainer may have very low physical fidelity. Still, if it allows deliberate practice of airway positioning, laryngoscopy technique, and procedural sequencing, it may have extremely high functional fidelity for the intended skill. Meanwhile, an ultra-expensive simulator with perfect skin texture and realistic chest rise may add very little educational value if those features are irrelevant to the learning objective. In fact, hyperrealism may detract from the learning. The key issue is alignment. What are learners actually supposed to achieve through participation in the scenario?
If the objective is communication during crisis management, the realism of the IV tubing probably does not matter much. If the objective is recognizing clinical deterioration, you may not need a fully immersive trauma bay. If the objective is emotional preparedness for family interaction during end-of-life care, standardized actors may matter far more than any mannequin technology.
The educational target should drive fidelity decisions, not the other way around.
Cognitive Fidelity Is Often the Real Goal
In many healthcare simulations, what we actually care about is cognitive fidelity. Does the learner think the way they would in real clinical practice without getting overly distracted by trying to interpret what we are simulating? Interestingly, cognitive fidelity often does not require perfect physical realism. Experienced educators have known this for years.
A simple verbal case discussion can generate enormous cognitive engagement if the scenario structure creates authentic decision-making pressure. A tabletop disaster exercise can produce meaningful systems thinking without any physical realism at all. Even low-tech simulations can yield deep learning if the cognitive architecture is well-designed.
On the flip side, I’ve seen high-fidelity simulations where learners became passive because the environment did too much of the work for them. The room looked amazing. But sadly, the thinking did not.
Extraneous Realism Can Become a Distraction
Sometimes realism becomes educational clutter. We add realistic phone calls, people, alarms, documentation, external chaos, or additional storylines.
And occasionally those elements are valuable. But sometimes we add them simply because “that’s what real life is like.” The problem is that simulation is not obligated to recreate reality in its entirety. Simulation is allowed to be selective. In fact, that is part of the power! Good simulation design should be selective. Real clinical environments are filled with noise, interruptions, inefficiencies, and distractions. If we reproduced every aspect of reality perfectly, we would probably impair learning most of the time.
Educational design requires intentional simplification. That does not make the simulation “less good.” It makes it more focused.
It is probably more important for novice learners. In general, experienced people can tolerate significantly higher complexity because they possess organized mental schemas that reduce cognitive burden. Novices lack such sophisticated filters. If you overload early learners with excessive realism, they may spend the entire simulation cognitively drowning rather than learning. That is an instructional design failure.
Fidelity Should Match the Objectives
One of the simplest questions simulation educators can ask during scenario design is: “What elements of realism are actually necessary to achieve the objective?” Not nice to have. What is necessary is the best question.
That question changes everything.
Not every simulation requires a fully immersive environment. Not every learner needs maximal complexity. Not every educational problem is solved by increasing fidelity. In fact, one of the hallmarks of experienced simulation educators is knowing when not to add realism. Because they understand that every additional layer of complexity carries a cognitive cost.
The Real Goal
The irony is that simulation professionals sometimes become so focused on recreating reality that we lose sight of why we built simulation in the first place. Simulation is an educational strategy. It’s not a theater or a technology demonstration.
It is not a competition to build the most realistic room, despite what the equipment manufacturers may try to make us believe.
Educational strategies should be judged by their ability to improve learning, performance, judgment, teamwork, and patient care. Sometimes higher fidelity improves learning, sometimes it is essential, and other times it is expensive noise that can distract learners. The challenge for simulation educators is developing the wisdom to know the difference and to adjust to achieve the best learning outcomes from the experience.
Because ultimately, the goal of simulation is not to recreate reality, it is to help achieve optimized learning!
Until Next time,
Happy Simulating!