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Reaction Time

Reaction Time

Tap the screen quickly when the circle turns green. 8 trials — be careful, don't tap early!

The screen will be red for a random time (1-4 seconds), then it turns green. Tap it as quickly as possible. If you tap during the red phase, the trial repeats. At the end you see your average reaction time.

What is reaction time?

Simple reaction time (simple RT) measures the interval between the appearance of a visual stimulus and a motor response (pressing a button). It is one of the most stable markers of basic cognitive function — measured consistently in neuropsychology for over 150 years (since Donders 1868).

According to Salthouse's theory (1996), the decline in processing speed is the primary cause of many age-related cognitive changes — more so than memory or attention themselves. Reaction time increases naturally by approximately 0.5–1 ms per year after age 40. Over 500 ms at 65–70 years may be a signal worth discussing clinically.

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Scientifically verified sources

Based on scientific research

Timp de reactie is a digital adaptation of clinically validated neuropsychological tests. Below you will find the official sources underpinning the methodology, along with international and Romanian medical institutions you can consult for a professional assessment.

📚 Studies and clinical validation

The original scientific papers and validation studies that demonstrate this paradigm measures what it claims to measure.

🌍 Recommendations from international medical institutions

Global organisations (NIH, Mayo Clinic, Alzheimer's Association, WHO, Lancet) that recommend cognitive training as part of a healthy routine for older adults. Direct links to official documents.

🇷🇴 Clinical assessment in Romania

If low scores recur, speak with a doctor. Here is where you can seek specialist advice in Romania — the only national Alzheimer's NGO, the relevant ministry, university neurology clinics, and accredited medical universities.

Important: This game is informational and educational. It is not a medical diagnostic tool. For a clinical assessment, consult a neurologist or psychiatrist. Repeatedly low scores are worth discussing with your GP as an indicator (similar to weighing yourself at home), not as a diagnosis.