Frequently, school-age children on a baseball field will shout, "think fast! " and immediately throw a baseball in the direction of a teammate. what is being tested is the teammate's:

The answer to this question is reaction time
reaction time refers to the time needed for people to do an appropriate response that relevant to the current situation.
The exercise that mentioned above will show us which children are gifted in such a way that make them able to create a proper response within the shortest amount of period.