There is a strong correlation between IQ and reaction time. A leading theory is that IQ is basically a measure of reaction time.
On the other hand, IQ is steadily increasing on average. This may, however, reflect how as society develops better abstractions, it tends to increase our reaction time.
On the other hand, IQ is steadily increasing on average. This may, however, reflect how as society develops better abstractions, it tends to increase our reaction time.