experimental designs Flashcards
1
Q
independent groups
A
p’s do condition A and others do condition B
take part in one condition
2
Q
repeated measures
A
same p’s do condition A then condition B then condition B then A
3
Q
matched pairs
A
p’s matched on key variables eg age/IQ
best= twin studies
4
Q
advantages of IG
A
- no order effects
- less chance of demand characteristics
5
Q
disadvantages of IG
A
- more p’s needed
- individual differences
6
Q
advantages of RM
A
- no individual differences
- less p’s needed
7
Q
disadvantages of RM
A
- more p’s needed for each condition
- DC’s - guess purpose of study
- time consuming
8
Q
advantages of MP
A
- less chance of individual differences
- no order effects
- less chance of DC
9
Q
disadvantages of MP
A
- matching is difficult
- time consuming
10
Q
what are order effects?
A
occur in RM
when p’s repeat a task they may do worse due to boredom/tiredness or do better due to practice
11
Q
what is counterbalancing?
A
ABBA
can help control order of effects
half p’s do condition A first then B
half p’s do B then A
