Perception-Action Coupling

Practice should give athletes the same cues they'd face in a real match.

If you've been listening to BJJ Mental Models for a while, you've probably heard us talk about perception-action coupling. It's a critical concept for sports coaches, but unfortunately, it's also really hard to wrap your head around. I must confess I've been trying to figure it out for some time. 😁

Today I'm going to do my level best to explain to you exactly what perception-action coupling is, why it's important, and how you can apply it to your jiu-jitsu journey.

Perception-action coupling, explained

First, let's break down exactly what perception-action coupling means.

Perception is the athlete's detection of sensory information: what they see, hear, and experience on the field.

Action is the actual movement made by the athlete.

Coupling means that perception and action aren't separate - they're intertwined.

So when you put it all together, perception-action coupling means that an athlete's perception, and the actions they take, create a feedback loop. Or as was said by the pioneering ecological psychologist James J. Gibson, “We must perceive in order to move, but we must also move in order to perceive.”

The lesson here is: no move or technique exists in a vacuum. It's totally dependent on the context, and in a real match, the context is always changing. This is why the “perception” part is so important: an athlete must be constantly perceiving the field and adapting their actions to the changing reality of the match.

In other words, an athlete can't just “do a technique.” The technique is always different because it must always be adapted to the many variables at play in competition. No technique is ever done the same way twice. The only way an athlete can achieve any measure of real success is by learning to perceive what's happening and adjust their actions accordingly.

WTF is an “affordance?”

This is where another term you may have heard before comes into play: affordances. Put simply, an affordance is an opportunity for action in your current situation. When I put my head and one of my arms inside your guard, that's an affordance for you: it's the perfect setup for a triangle choke.

“Affordances” can be a confusing word, but it makes sense if you think about how we'd use it in conversation: leaving the head exposed affords a guillotine choke, crossing an arm across the body's center line affords a back take, and so on.

Basically, you've observed an affordance in the environment (which is the “perception”) that gives you a cue about what you should do next (which is the “action”).

We want athletes to perceive openings in a match, such as their opponent posting their arm. Then, we want them to take action based on what they've perceived, such as trapping that arm and setting up a submission. How well they can do this is the “coupling” part of perception-action coupling.

Dr. Rob Gray has a mantra for this: “keep 'em coupled.” He means ensuring that when we design practice sessions, we make sure the gap between “what our athletes perceive” and “what we want them to do” is as small as possible. That's how we create training that translates directly to real matches.

When there's a wide gap between perception and action, we encounter the types of problems so commonly discussed in jiu-jitsu, such as the limited usefulness of dead drilling or scripted repetitions. These don't quite offer the same affordances that you'll encounter in live rolling.

In the real world, designers deliberately create products with affordances in mind so customers intuitively know how to use them. If you see something with a handle, that affords being picked up.

In sports, coaches can create affordances in a similar way. Games and practice sessions should be designed such that players are more likely to intuitively land in the place the coach wants.

This all starts to matter when you realize that “affordances” are different in every situation. It depends on your body type, what you're trying to do, who your opponent is, how they react, and an uncountable number of other variables. That's why eco coaches say stuff like “no two techniques are the same” and “you have to figure it out yourself.” The coach's job isn't to give you the single correct perfect answer, it's to help you identify the affordances that make sense for you, and take action quickly.

What this means for jiu-jitsu

So the goal of training is not to “learn how to do the technique perfectly.”

Rather, the goal of training is to “learn how to adapt to a changing environment and make the technique work anyway.”

This is why drilling without resistance is suboptimal. It gets the “action” part right, but not the “perception” part. When drilling without resistance, the information and feedback an athlete is receiving will be totally different from what they'd encounter in a real roll.

This is also why there might be limited utility to drilling with grappling dummies. The hard part of jiu-jitsu isn't learning the steps to each technique, it's learning how to apply techniques even when your opponent is resisting. Feeling and understanding the resistance from your opponent is an example of perception. And if you're not training with that perception, you're not getting a complete understanding of how to do a technique.

So what to do? Ben Galloway from Opposite Direction has a great suggestion:

“When designing practice environments for players, it is important to provide all information that would be present in a game situation.” —Ben Galloway

In other words, your training environment should attempt to simulate the stimuli an athlete would receive in a real match.

But an important note: that doesn't mean you should turn every training session into an actual competition. Doing this might solve the perception-action problem, but it can also result in unnecessary damage to the athlete and an increased risk of injury. Just look at how some of the old-school MMA fighters turned out, and you'll understand why you don't want to turn training sessions into actual fights.

The coach's job is to create a training environment that simulates real competition without the risks of real competition. This is where the truly great coaches stand out, and why it's so important to think very carefully about how you instruct your athletes to train.

On the podcast:

• Ep. 203: Evidence-Based Coaching, feat. Greg Souders
• Ep. 206: How We Learn to Move, feat. Dr. Rob Gray
• Ep. 215: Incentives & Triggers, feat. Jorgen Matsi

Further study:

• Perception-Action Coupling — Opposite Direction
• Coaching tutorial - Perception-Action Coupling — skillforkids
• The Perception & Action Podcast