Tetris, Trauma Memory and Psychological First Aid

Research shows that playing a visuospatial game like Tetris within six hours of a traumatic event may reduce the frequency of intrusive memories and flashbacks. This works because Tetris uses the same cognitive systems the brain relies on to consolidate traumatic visual memories, creating interference that reduces how vividly those memories are stored. This is known as psychological first aid through dual-task interference, and it is a low-risk, evidence-based option for first aid responders.

After the Emergency: What First Aiders Need to Know About Trauma and Memory

Most first aid training focuses on the physical: stop the bleeding, open the airway, start compressions. That foundation matters and it saves lives. But there is a growing body of evidence that what happens in the hours after a traumatic incident is equally important for the people involved, and that first aid responders have a practical role to play in that process too.

This article is for first aiders, workplace safety officers, teachers, parents, and anyone who has ever been the person who stepped in during an emergency and then wondered what to do next, once the ambulance had left and the adrenaline had worn off.

The Science Behind the Tetris Research

In recent years, researchers have been studying a straightforward question: can a simple intervention in the immediate aftermath of trauma reduce the likelihood of someone developing lasting intrusive memories or PTSD symptoms? The answer, based on a growing number of clinical trials, appears to be yes, and the most studied intervention is a video game.

Tetris works not because it is distracting, but because it actively competes with the brain's trauma-processing systems. The brain has limited visuospatial resources. Traumatic memories are heavily visual and spatial. When those same systems are occupied by a demanding task like rotating and placing shapes in real time, there is less cognitive capacity available to consolidate the traumatic imagery with the same intensity. The result, supported by research involving healthcare workers and accident survivors, is fewer intrusive images in the days and weeks that follow.

This is not a cure, and it is not a replacement for professional mental health support. But it is a low-cost, low-risk tool that first aid responders can offer when it is appropriate to do so.

Who This Article is For

You do not need a background in psychology to find this useful. If you work in a job where you might be first on scene at an incident, manage a team, care for children or elderly people, or simply want to be a more complete and capable first aider, this article gives you practical knowledge to take with you.

What You'll Learn

This article explains how traumatic memories form in the brain and why some become intrusive. It covers the dual-task interference model in plain English, what clinical research has actually found, and what it means for first aid responders on the ground. It also covers the signs that someone may need professional support after a traumatic event, and how to make that referral with confidence.

Modern first aid is as much about understanding people under stress as it is about physical techniques. The more you understand about both sides of emergency response, the more effective and confident you will be when something serious happens.

REACHAU delivers nationally recognised first aid training across Perth and regional Western Australia. Our courses are designed for real-world situations, delivered in small groups by a trainer who understands both the physical and psychological dimensions of emergency response.