Today we are going to test your reflexes. What are your reflexes? Why is it important we have sharp reflexes?
Equipment– Rulers, 5 section book, Pen, table (printed)
Today you are going to work with a partner. One at a time you are going to hold a ruler at its base, down the bottom. You are going to close your eyes and when your partner and when your partner says ‘Go’ you are going to release the ruler and try to quickly catch it again. You will record how many centimetres down the ruler you got.
Hypothesis: Under which conditions will you be the fastest? Why?
First we will test visual response. Hold the ruler at the 30 cm mark so that the 0 cm end is just at your friend’s index finger.
- Tell your friend that when you release the ruler they are to grab it as fast as possible. Do not make any sounds or gestures that you are releasing the ruler. They have to react to the visual stimulus of seeing the ruler being released. Record the centimeter mark.
- Repeat the experiment three more times. Then switch places with your partner and re-do it.
Now you will record auditory reactions. Have your partner sit at the table as before, also be sure your partner puts on the eye shades.
- Again testing the same hand, tell your partner that you will say the word “Release” as you release the ruler. Once they grab it record the centimeter mark and repeat 3 times. Switch places with your partner again.
For the last test, have your partner sit at the table and close their eyes. This time you will test the tactile response. Tell your partner that you will touch the opposite shoulder of the hand they are using as you release the ruler.
- Give you partner no other clue just a simple touch. Record the measurement and like before, repeat three times, then switch places and redo.
Now try using 2 rulers!
- You will hold both rulers this time instead of just one.
- Tell your partner that you will release just one ruler and they must pick the correct one and grab it as fast as possible.
- When you are ready to begin, randomly decide one ruler to drop. It does not matter which one, you will perform this test 5 more times, but never tell your partner which ruler you will drop.
- Again as before switch roles and redo.
- Finally, we will test the auditory reaction again. This time using both rulers.
- Get in the same position as before with both rulers. Make sure your partner has the eye shades on.
- You will then proceed to say “left” or “right”. As you say it you will drop the corresponding left or right ruler. Your partner must decide which ruler to grasp based on the auditory cue you give: “left” or “right”. As before, your partner must only squeeze one hand.
- Record the measurement and repeat 3 more times, remember to randomly decide which ruler to drop. Switch roles and repeat.
-Did you get better with your reflexes? Did you get worse? Why do you think this happened?
– Was your hypothesis correct? Why/Why not?
-What sense were you fastest at?
-What sense were you slowest at?
-What can you conclude from this experiment?