Hick's Law states that the time it takes to make a decision increases logarithmically with the number and complexity of choices available.

Which type of reaction time is more important for gaming?

Choice reaction time is typically more important for gaming, as players rarely respond to a single predictable stimulus and must instead choose between many possible actions.

Simple vs. Choice Reaction Time: What's the Difference?

APRIL 16, 2026 • 6 MIN READ

When we talk about "fast reflexes," we usually lump everything into one category. But in the world of cognitive psychology, not all reaction time is created equal. There is a massive difference between responding to a single predictable flash and making a split-second choice between five different targets.

Understanding the two fundamentally different cognitive processes behind your speed can help you train more effectively.

What Is Simple Reaction Time?

Simple Reaction Time (SRT) is the most basic form of response. It involves one stimulus and one predefined response. For example: "Tap the screen when it turns blue."

In this scenario, your brain doesn't need to "process" what it's seeing or "decide" what to do. It simply needs to bridge the gap between the stimulus (blue light) and the motor command (tap). SRT measures your raw neural conduction speed.

Average Auditory SRT: 150 — 200 ms
Average Visual SRT: 180 — 250 ms

What Is Choice Reaction Time?

Choice Reaction Time (CRT) is significantly more complex. It involves multiple stimuli, and each requires a different possible response. A classic example is a "Go/No-Go" task: "Tap if the word is RED, but wait if the word is BLUE."

The extra time it takes to perform a CRT task is due to the "central processing" required to identify the stimulus and select the correct response. This is governed by Hick's Law, which states that your reaction time increases as the number of choices increases.

Average CRT: 300 — 500+ ms (depending on choice complexity)

Why the Difference Matters

In the real world – whether it's sports, driving, or competitive gaming – we are almost always dealing with choice reaction time. A goalie in soccer doesn't just react to a sound; they must identify the ball's trajectory and decide which direction to dive.

SRT is your "hardware" speed (your nervous system's wiring), while CRT is your "software" efficiency (how fast your brain can run its decision-making algorithms).

Which Does ReflexLab Test?

We designed ReflexLab to measure both aspects of cognitive speed:

Classic Mode: Measures your Simple RT. It's a pure test of your stimulus-response baseline.
Stroop Mode: Measures Choice RT. The conflict between word and color adds a massive "decision load," slowing you down and testing your processing efficiency.
Phantom Ring: Represents a third category – Anticipatory Timing. This measures your ability to predict an intersection rather than just responding to one.

Conclusion

If you want to be truly "fast," you can't just train your raw response speed. You must also train your brain to make decisions under pressure. By alternating between simple and choice reaction tasks, you can optimize both your neural hardware and your cognitive software.