Week 7 experimental design Flashcards
1
Q
what is the aim of experimental design
A
- to determine cause and effect relations
2
Q
key feature of an experiment
A
experimental group and control group
3
Q
critical point about the groups/conditions
A
- there can only be 1 difference between experimental group and control group. If there is more than 1 difference, we cannot infer causal relations as we are uncertain which factor is responsible for changing scores
4
Q
key feature of an experiment
A
random assignment to conditions. controls for individual differences.
5
Q
pros of experimental design
A
-determine cause and effect
-determine direction of relationship
-rule out other explanations by replication
-high validity
6
Q
cons of experimental design
A
-cannot manipulate all independent variables
-potential for reactivity effects
-potentially low external validity
-ignores ppt perspective
