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This is a simple reaction game designed to measure human response times. When you begin a game, a button instructs you not to press it until it turns green. After a random delay, the button turns green, and you should press it as quickly as possible. You need five valid attempts (≥100ms). Attempts under 100ms are considered accidental and not counted. These extremely short times are likely due to anticipating the change rather than reacting to it. Learn more about reaction times here. After completing five valid attempts, you'll get your average reaction time.