Reflex Ability Lab

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The main purpose of this lab experiment was to determine if certain senses affect reflex ability. To test this, you must isolate the senses sight, sound, and touch. First we started off with a concept text by dropping a dollar and seeing how long it takes for someone to react. It was a bit tricky because the dollar was not very long, so there wasn’t much time to react before it would become out of reach. In my group were Valerie, Shaya, and I. We ran into a few problems in the touch only experiment because I am left handed. The dependent variable is the reaction time, and the independent variable was each of the isolated senses. The control was a verbal command of “go” and the eyes remained open so the tester could see the falling meter stick. I believe that if the independent variable of sight is tested, then the reaction time will be significantly shorter. * Materials- -meter stick -blind fold -tape (optional): to show the catcher where to place their hands prior to catching the meter stick -calculator - 3 or 4 people -journal and pen: to record raw data * Safety Precautions NO HORSEPLAY. You could accidentally hit someone with a meter stick if you swing it wildly. Be careful of falling meter sticks on your feet. People will be blindfolded, so be aware of that. * Procedure 1. Work in groups if 3 or 4. 2. Gather materials (meter stick, blindfold, etc.). 3. If you want to use tape to increase accuracy, place the tape across the 50 cm mark. 4. Assign one person to be a dropper and one to be a catcher. 5. The dropper should hold the meter stick above the catcher at the 25 cm mark, and the catcher’s arm should be extended straight in front of the body. 6. The catcher should hold out the forefinger and thumb to catch, and as the catcher prepares to catch make sure his/her fingers are aligned with the 50 cm mark. 7.

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