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Name:Date:Catch It: Reaction Time Materials: metric ruler, lab notebook, pencil, chart, partnerCatch Distance (cm)Reaction Time (sec)Catch Distance (cm)Reaction Time (sec)1.0513.172.0614.183.0715.194.0816.205.0917.216.1018.227.1119.238.1220.249.1321.2510.1422.2611.1523.2712.1624.28On a piece of paper, write your name and your partner’s name and leave 5 spaces under each name (because each person will complete 5 trials). Once you complete the 5 trials, please add each trial and divide by 5 to determine the average.Data Table Part A:Group MembersTrial 1Trial 2Trial 3Trial 4Trial 5AverageProcedure:Part A (Visual Test):Subject one dangles dominant hand off the edge of a table/desk.Subject two holds a 30 centimeter (12-inch) ruler between two fingers at the 30 cm mark, having the 0 mark just above subject one’s finger. (Your partner’s fingers should not touch or overlap the ruler near the zero line.)Subject one grabs the ruler as fast as possible, when they SEE it being released.Record the centimeter measurement.Calculate how long it took your partner to respond using the chart provided.?Repeat this four more times, for a total of five measurements.Switch tasks and try catching when your partner drops the ruler, then compare your results with the others.?Data Table Part B:Group MembersTrial 1Trial 2Trial 3Trial 4Trial 5AverageProcedure:Part B (Auditory Test) 1. Subject closes their eye and dangles dominant hand off the edge of a table/desk.Subject two holds a 30 centimeter (12-inch) ruler between two fingers at the 30 cm mark, having the 0 mark just above subject one’s finger. (Your partner’s fingers should not touch or overlap the ruler near the zero line.)Subject one grabs the ruler as fast as possible, when they HEAR the word “GO”.Subject two simultaneously says “GO” and releases the ruler at the same time. (Partner’s eyes should be closed)Record the centimeter measurement.Calculate how long it took your partner to respond using the chart provided.?Repeat this four more times, for a total of five measurements.Switch tasks and try catching when your partner drops the ruler, then compare your results with the others.?Data Table Part C:Group MembersTrial 1Trial 2Trial 3Trial 4Trial 5AverageProcedure:Part C (Tactile Test) 1. Subject closes their eye and dangles dominant hand off the edge of a table/desk.Subject two holds a 30 centimeter (12-inch) ruler between two fingers at the 30 cm mark, having the 0 mark just above subject one’s finger. (Your partner’s fingers should not touch or overlap the ruler near the zero line.)Subject one grabs the ruler as fast as possible, when they FEEL a tap on the shoulder.Subject two simultaneously taps partner on the shoulder and releases the ruler at the same time. (Partner’s eyes should be closed)Record the centimeter measurement.Calculate how long it took your partner to respond using the chart provided.?Repeat this four more times, for a total of five measurements.Switch tasks and try catching when your partner drops the ruler, then compare your results with the others.?Catch It: Reaction TimeAnalysis Questions:1a. What are some variables that you kept constant?1b. What are some variables that you were supposed to keep constant, that you couldn’t?1c. How could you improve the design of your experiment if you were to do it again?2. Was the data you collected qualitative or quantitative?3. Was your average reaction time better for visual, auditory or tactile? Why do you think you got the results you did?4. Explain why it takes time to react when you see the ruler falling by drawing and labeling the pathway of nerves. ................
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