Experiment Design

Question 1

Repeated measures

Answer 1

The same participants take part in two different conditions, e.g. studying for one test with TV and one without TV

“Within groups”

Question 2

Independent groups

Answer 2

Different participants take part in each ‘condition’ of the study, e.g. one group studies with TV and one group without TV

“Between groups”

Question 3

Matched pairs

Answer 3

Participants are matched ( e.g. two students with similar scores on earlier tests ) and one takes part in each condition

Question 4

Strengths and limitations for independent groups

Answer 4

• Participants only need to take part once - don’t get tired or have ‘ practice effects ‘
• But different people = different results

Question 5

Strengths and limitations for repeated measures

Answer 5

• Need fewer participants than independent groups, and compare ‘ like with like ‘
• But participant get tired, bored, or get better with practice

Question 6

Strengths and limitations for matched pairs

Answer 6

• Similar advantages to independent groups, and reduce the difference
• But need to test beforehand, and may not get an accurate match