Experimental designs Flashcards
1
Q
what are independent group designs
A
- pps allocated to different groups
- each group represents one experimental condition
2
Q
what is the evaluation of independent group designs
A
- less economical
- order effects aren’t a problem
- participant variable may be the cause not IV
3
Q
what are repeated measures
A
all participants take part in all conditions
3
Q
what is the evaluation of repeated measures
A
- counterbalancing must be used as pps have to take part in both conditions
- order effects can arise
- demand characteristics
3
Q
what are matched pairs
A
- participants are paired together on a variable relevant to the experiment
3
Q
what is the evaluation of matched pairs
A
- less effect of demand characteristics and order effects
- pps can never be matched exactly
- matching can be time consuming and expensive
4
Q
what is random allocation
A
- attempt to control for participant variables in independent designs
- ensures that each participant has the same chance of being in one condition
5
Q
what is counterbalancing
A
- attempt to control for order effects in repeated measures
