1.3 - Reaction Time Practical

What is the method for the reaction time required practical?

1. Student A sits with their arm resting on the edge of a table

2. Student B holds the ruler so that 0 cm on the ruler is level with the top of the thumb of Student A

3. Student B lets go of the ruler without warning.

4. Student A catches the metre rule as quickly as possible

5. Record the number on the ruler where Student A caught it.

6. Repeat 9 more times

7. Repeat with Student B now catching the ruler

8. Both students repeat the experiment with their other hand

What are some things to try and keep the same?

• Same starting position of the ruler

• Same distance between the catcher’s thumb and fingers

• Support your arm on the bench the same way

• Use the same hand each time

• Drop the ruler without warning

What is the starting position of the ruler?

aligned 0cm with the top of the catches thumb

What are some other control variables for tests similar to this?

• age

• sex

• BMI

• amount of sleep

• both participants have’t consumed any medicine/caffiene