Is this a measure of intelligence?

No. Reaction time is a speed benchmark. It correlates with some cognitive constructs but is not an IQ test.

Why are my phone and desktop results different?

Touch and display input pipelines add different amounts of latency. We store device and input class so norms stay fair.

What counts as a false start?

Responding before the green signal appears. False starts are flagged and don't count toward your median.

Tempo de Reação

How fast do you respond to a visual signal?

~2 min

Os valores medidos dependem do teu dispositivo, método de introdução, taxa de atualização do ecrã, sistema operativo e ambiente. Não é uma medição com qualidade de laboratório.

O que este teste mede

Reaction Time measures the time between a visual signal appearing and your response. It is a direct benchmark of your sensorimotor speed, not a psychological trait.

Como funciona

Wait for the panel to turn green, then respond as quickly as you can. You get 3 practice trials and 15 scored trials with randomized foreperiods to prevent anticipation.

Como os resultados são calculados

Your result is the median of 15 valid trials in milliseconds. Faster is better. False starts and tab-blur events are flagged and excluded from the median. Device and input latency affect results, so phone and desktop are not directly comparable.

Precisão e limitações

Hardware latency, monitor refresh rate and browser backgrounding can all shift results. This is a utility benchmark (Evidence C), not a clinical measure.

Perguntas frequentes

Science & Research

All science

Reaction Time and Cognitive Performance

Reaction time — the milliseconds between a stimulus and your response — is one of the oldest and most reliable measures of cognitive processing speed. Over a century of research has linked it to intelligence, aging, sleep, and even longevity.

Read article

Continue explorando

Reação Visual~2 min Reação Auditiva~2 min Memória Visual~7 min Estimativa Completa de QI~30 min

Última revisão: 2026-08-14