>>10906136one way to get a rough estimate
Get a friend and ruler,
have the friend hold the above your hand so that you have a defined start point along level with the edge of your fingers
stare at the ruler, and have your friend release the ruler at a random time
catch the ruler
measure how many cm passed before you caught it,
do this like 10 times, take an average of the 5 closest scores
use equations of constant acceleration to estimate your reaction speed
statistically this test alone correlates at about 30% with IQ and is more accurate than online reaction speed tests because there's no lag
there are similar but more complex tests with higher correlations usually because your brain has to consciously choose an option which is more demanding g-factor wise
