Control Experimental Deisgn

Question 1

Prob with independent group design

Answer 1

Individual differences
-diff ppt in diff condition

Question 2

How to Control IGD

Answer 2

Random allocation
-names of ppt jn equal size paper
- put paper in hat
- randomly pick out ppt names and place half in c 1 and half c 2

Question 3

Problem with repeated measure design

Answer 3

Order effect
- ppt takes part in all condition (perform better or worse) due to lasting effects

Question 4

How control RMD

Answer 4

Counterbalancing ABBA
Why= control and reduce order eff
How= half ppt complete c A and then CB
-other half complete cB first then CA
- order effects are balanced across both conditions