Experimental Design

Question 1

Experimental design

Answer 1

Different ways testing ptsps can be organised in relation to experimental condition

Question 2

Independent group design

Answer 2

When 2 separate groups of Ptsps experience 2 different conditions
Use random allocation to control Ptsps variables
Use to asses and compare performance of 2 groups against each other
+ no order effects
- more ptps required/ Ptsps variables

Question 3

Repeated measures design

Answer 3

All Ptsps take part in both conditions
Use to compare two sets of data from all conditions to see a difference between them
+ few ptps required
- order effects

Question 4

Matched pairs design

Answer 4

Ptps paired together based on characteristics
Use to reduce confounding Ptsps variables when comparing 2 sets of data
+ avoids order effects/ reduces Ptsps variables
- time consuming to match pairs/ impossible to match exactly unless identical