experimental and research designs

Question 1

what are the 3 experimental designs

Answer 1

independent groups
repeated measures
matched pairs

Question 2

what is independent groups

Answer 2

ppts are only involved in one condition

Question 3

evaluate independent groups

Answer 3

+ less likely to guess aim, demand characteristics/ expectancy effects reduced,
+order effects reduces
- 2x ppts
- individual differences

Question 4

what is repeated measures

Answer 4

all ppts take part in all condition

Question 5

evaluate repeated measures

Answer 5

+ no individual differences
+ fewer ppts
- demand characteristics
- order effects

Question 6

what is matched pairs

Answer 6

ppts matched on characteristics important to study then randomly assigned condition

Question 7

evaluate matched pairs

Answer 7

+ no order effects
+ no individual differences
+ no demand characteristics
- time consuming
- many ppts excluded
- not all characteristics can be matched