RM experimental design

Question 1

What is experimental design referring to?

Answer 1

how participants are used in experiments

Question 2

What is an independent groups design

Answer 2

when separate groups of participants experience different conditions in the experiment

Question 3

strengths of independent groups

Answer 3

• order effects are no longer an issue

Question 4

limitations of independent groups

Answer 4

• less economical as more participants are needed to produce the same data as repeated measures
• participants who are in the groups are not the same, so the mean differences could be because of individual differences

Question 5

what is a repeated measures design

Answer 5

participants experience both conditions of the experiment

Question 6

Strengths of repeated measures

Answer 6

• participants variables are controlled

- economical as less participants are needed

Question 7

limitations of repeated measures

Answer 7

• order effects occur because repeating tasks could create boredom or fatigue which may cause issues in the 2nd task
• participants ability may improve through practice
• demand characteristics occur as participants may figure out the aims of the study

Question 8

What is a matched pairs design

Answer 8

participants are paired together on variables relevant to the experiment
- one participant from each pair is allocated to a different condition

Question 9

strengths of matched pairs

Answer 9

• order effects and demand characteristics are less of an issue as participants take part in one condition

Question 10

limitations of matched pairs

Answer 10

matching people may be time consuming and possibly expensive, making this method less economical