experimental design

Question 1

experimental design

Answer 1

The different ways pp’s can be organised in relation to IVs/conditions of the exp

Question 2

independent groups

Answer 2

2 groups, different pp’s in each condition

Question 3

repeated measures

Answer 3

1 group of pp’s which do both conditions

Question 4

matched pairs

Answer 4

pp’s tested on variables relevant to the study, pps then matched to one member and each pair goes in each condition

Question 5

independent strengths

Answer 5

• order effects not a problem because pp’s only do the experiment once

Question 6

independent weaknesses

Answer 6

• different pp’s in each group, participant variables can act as EVs
• to deal with participant variables, try to allocate pp’s to conditions using chance or systematic method

Question 7

repeated strengths

Answer 7

• no participant variables
• fewer pp’s needed so less expensive

Question 8

repeated weaknesses

Answer 8

• order effects reduce validity
• to deal with order effects, use counterbalancing so half the p’s do condition A first and then conditions B, the others do B and then A

Question 9

matched strengths

Answer 9

• no order effects
• fewer participant variables

Question 10

matched weaknesses

Answer 10

• takes time to match participants
• doesn’t control all participant variables