The Triune Brain Model
While an oversimplification, Paul MacLean's triune brain model provides a useful framework for understanding how emotions drive behaviour. The brain develops in layers, from the most primitive survival systems to the sophisticated thinking systems.
The Brain Stem (Survival Brain)
This controls automatic functions like breathing, heart rate, and the most basic survival responses. When a child's brain stem is activated by extreme threat, you might see freeze responses, dissociation, or shut down.
The Limbic System (Emotional Brain)
This includes the amygdala (threat detection) and hippocampus (memory). The limbic system processes emotions and triggers survival responses. When a child is dysregulated, this part of the brain is in charge. You might see fight (aggression, shouting) or flight (running, avoidance) responses.
The Prefrontal Cortex (Thinking Brain)
This is responsible for reasoning, problem-solving, impulse control, and making thoughtful decisions. This is the part of the brain we are usually trying to appeal to with behaviour management strategies. However, when a child is dysregulated, this part of the brain goes offline. They literally cannot think clearly, remember instructions, or make good choices.
When Children Cannot Think Clearly
When a child's limbic system perceives threat, their body automatically prepares for survival. Blood flow is diverted away from the prefrontal cortex to the muscles and survival systems. This happens in milliseconds and is entirely unconscious.
In this state:
- The child cannot access reasoning or logic
- They cannot remember rules or expectations
- They cannot control their impulses
- They cannot problem-solve or make good decisions
- They cannot regulate their emotions
- They cannot learn new information
This is not a choice. It is a physiological response to perceived threat. Expecting a dysregulated child to "calm down," "make a good choice," or "think about what they are doing" is neurologically impossible.
Behaviour as Communication
All behaviour communicates something about a child's internal state. When we see challenging behaviour, we are seeing the outward expression of an internal experience. The behaviour is not the problem. It is the signal that there is a problem.
Common messages behind dysregulated behaviour:
- "I feel unsafe"
- "I am overwhelmed"
- "I do not understand what is expected"
- "This is too hard for me"
- "I am frightened"
- "I need connection"
- "I feel shame"
Our job is not to stop the behaviour. Our job is to understand what the behaviour is communicating, and to respond to that underlying need.
Why Traditional Behaviour Management Often Fails
Many traditional behaviour management approaches assume that behaviour is a choice and that children can be reasoned with, even when dysregulated. These approaches often involve:
- Logical consequences
- Reasoning and explaining
- Reminders of rules and expectations
- Demands for compliance
- Sanctions and rewards
When a child is within their window of tolerance, these approaches may be effective. However, when a child is dysregulated, their thinking brain is offline. These approaches not only fail to work, they often escalate the situation by adding more threat.
For children who have experienced trauma, adversity, or chronic stress, their threat detection system is highly sensitised. They perceive threat more readily and intensely than other children. Traditional behaviour management approaches can feel threatening and push them further into dysregulation.