Reaction times — practical

Question 1

What is an indépendant variable and which axis is it plotted on?

Answer 1

This is what changes ~ plotted on x axis

Question 2

What is a dependant variable and what axis is it plotted on?

Answer 2

This is what’s measured ~ plotted on y axis

Question 3

What are control variables

Answer 3

These are what is kept the same to avoid bias

Question 4

State 7 factors affecting reaction times

Answer 4

Gender
Age
Physical fitness
Level of fatigue
Alcohol
Personality type
Caffeine

Question 5

What are the 3 stages to the reactions time practical?

Answer 5

1. Use of dominant hand rests whilst other person drops a ruler,
2. The hand rests at 0cm and catches the ruler when it is dropped, the cm which it is caught at is recorded and this repeats with other people
3. Recordings are then converted into reaction times