any further equipment needed depending on the factor you are changing.
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Method
Work with a partner to do this test. Choose who will be person 1 and who will be person 2.
Each of you should use your dominant hand to do this experiment. If you are right handed then your dominant hand is your right hand.
Person 1 sits down on the chair, with good upright posture and eyes looking across the room.
Person 1 puts the forearm of their dominant arm across the table with their hand overhanging the edge.
Person 2 holds a ruler vertically with the bottom end (the end with the 0 cm mark) in between person 1’s thumb and first finger. They will tell person 1 to prepare to catch the ruler.
Person 1 catches the ruler with their thumb and first finger as quickly as possible when it drops.
Record the number on the ruler that is level with the top of person 1’s thumb.
Have a short rest, then repeat the test several times.
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