1
Q
What are extraneous variables?
A
Variables that can impact the outcome.
Only effect the DV.
Unsystematic error - random errors
2
Q
What are confounding variables?
A
Systematic error
Affects DV and IV
3
Q
How do you counteract a systematic error?
A
- counterbalancing
- standardisation
4
Q
How do you counteract unsytematic?
A
- use matched pairs
- control for participant variables
- more participants
5
Q
What is power?
A
The probability of correctly rejecting the null hypothesis
6
Q
How to help power?
A
- more participants
- ceiling and floor effects
- use matched pairs
