Experimental Design AO3

Question 1

What are the strengths of Independent Measures Design?

Answer 1

• not affected by order effect because no participant will be used in more than one condition
• participants are less likely to guess the aims

Question 2

What are the strengths of Repeated Measures Design?

Answer 2

• individual differences are removed
• participant variables are controlled so less participants are needed, therefore less time consuming

Question 3

What are the strengths of Match Pair Design?

Answer 3

• avoids order effect so counterbalance is unnessassary
• less participants are needed

Question 4

What are the weaknesses of Independent Measures Design?

Answer 4

• affected by individual differences
• no control of participant variables so random allocation will be requires
• expensive as twice the amount of participants are needed

Question 5

What are the weaknesses of Repeated Measures Design?

Answer 5

• could be affected by confounding variables rather than IV
• suffers from order effect
• can be affected by demand characterists

Question 6

What are the weaknesses of Matched Pair Design?

Answer 6

• time consuming to pair people up
• requires a pilot study

Question 7

What is counter balancing?

Answer 7

• an attempt to control order effect
• does this by:
  1. spliting participants into two group
  2. making half do conditons A then B, the other half does B then A

Question 8

What is random allocation?

Answer 8

• an attempt to control participant variables
• does this by allocating participants to different groups using random techniques