'Reaction Time Ruler Drop Test  Here is a simple reaction time test using only a ruler, and a little bit of calculating to determine how long it takes a person to respond to the dropping of an object by measuring how far the object can falls before being caught.  purpose: to measure reaction time, hand-eye quickness and attentiveness. equipment required: 1 meter long ruler. procedure: The person to be tested stands or sits near the edge of a table, resting their elbow on the table so that their wrist extends over the side. The assessor holds the ruler vertically in the air between the subject\'s thumb and index finger, but not touching. Align the zero mark with the subjects fingers. The subject should indicate when they are ready. Without warning, release the ruler and let it drop - the subject must catch it as quickly as possible as soon as they see it fall. Record  the distance the ruler fell. Repeat several times.' 

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