Human reaction time (Required Practical)

Question 1

Tell me the step to measure a humans reaction time

Answer 1

1. person 1 sits on a stool with good upright posture
2. If you are right-handed, then your dominant arm is your right arm.
3. Now person 2 holds a ruler vertically.
4. The 0 cm mark should be between person 1’s thumb and first finger.
5. Person 2 then tells person 1 to prepare to catch the ruler.
6. Person 2 now drops the ruler at a random time.
7. Person 1 has to catch the ruler with their thumb and first finger as quickly as possible when it drops.
8. Person 2 now records the measurement on the ruler that is level with the to of person 1’s thumb.
9. At this point, person 1 has a short rest.
10. repeat this text several times to get a mean calculation
11. from these results we can convert the results into reaction time by using a conversion table
12. Then the 2 people switch places and repeat the while practical over again

Question 2

What is the independent variable of this experiment

Answer 2

the person that tests their reaction time

Question 3

what is the dependant variable

Answer 3

the reaction time

Question 4

what are the control variables in this experiment

Answer 4

• the starting distance between the thumb and the first finger
• measure the ruler at the top at the thumb
• the environment of the room e.g the light and background notice