Experimental Design

Question 1

What is experimental designs?

Answer 1

How to allocate your participants to different conditions

Question 2

What are the three experimental design?

Answer 2

• Independent groups
• Repeated measures
• Matched pairs

Question 3

Describe the independent measure:

Answer 3

• Recruit group of participants
• Randomly allocate to conditions
• Measure the DV for each group
• Compare the results for the two groups

Question 4

Strengths of independent measures:

Answer 4

• No order effects

- Reduced demand characteristics

Question 5

Limitations of independent measures:

Answer 5

• Participant variables

- More participants needed

Question 6

Describe the repeated measures:

Answer 6

• Recruit a group of participants
• Does condition one, then conditions two
• Compare the results for the two conditions

Question 7

Strengths of repeated measures:

Answer 7

• Reduced participant variables

- Fewer participants

Question 8

Limitations of repeated measures:

Answer 8

• Order effect e.g boredom

- Rise in demand characteristics

Question 9

How to eliminate limitations of independent measures?

Answer 9

Randomly allocated to conditions to avoid bias

Question 10

How to eliminate limitation of repeated measures?

Answer 10

• Counterbalancing

- Single blind technique

Question 11

Describe the matched pairs:

Answer 11

• Recruit a group of participants
• Find there personality
• Find similar people
• Pair them together
• Separate them into each condition
• Compare the results of the matched pairs

Question 12

Strengths of the matched pairs:

Answer 12

• Participant variable reduced

- No order effect

Question 13

Limitations of the matched pairs:

Answer 13

• Matching is not perfect
• More participants required
• Time consuming

Question 14

How to eliminate limitations of matched pairs?

Answer 14

• Use identical twins in different conditions

- Already closely matched