experimental designs

Question 1

1) what are independent measures?

2) why are they used?

Answer 1

1) where a group of participants are allocated to either experimental conditions
2) to record and compare findings

Question 2

1) what are repeated measures?

2) why are they used?

Answer 2

1)) where a group of participants are exposed to both conditions

2) to record and compare findings

Question 3

what are matched pairs?

Answer 3

where participants are tested on to gather results and then are paired depending on the similar scores

Question 4

how are matched pairs and independent measures similar?

Answer 4

one of the matched pair is put into the experimental condition, while the other is put into the control condition

Question 5

what are the strengths and weaknesses of repeated measures?

Answer 5

• strengths -> fewer participants needed to be recruited as they are used in both conditions
• weakness -> order effects -> e.g displaying demand characteristics and tiredness

Question 6

what are the strengths and weaknesses of independent measures?

Answer 6

strengths -> there are no order effects as they’re only doing one condition

weakness -> there is potential for error due to individual difference

Question 7

what are the strengths and weaknesses of matched pairs?

Answer 7

• strength -> there are no order effects (one condition)
• individual differences are reduced
• weakness -> it can be time consuming and expensive