Experimental design

• What is an independent group?

  Participants divided into 2 groups and allocated to condition A or B.
• What are repeated measures?

  Where participants take part in both conditions A and B.
• What is matched pairs?

  Where participants are tested before taking part in the experiment and are matched for qualities into pairs where one participant takes part in condition A and the other in B.
• What are the strengths of independent groups?

  Less materials needed. No order effects. Less chance of demand characteristics.
• What are the strengths of repeated measures?

  Less participants needed. Less individual differences.
• What are the strengths of matched pairs?

  Less chance of individual differences. No order effects. Less chance of demand characteristics.
• What are the weaknesses of independent groups?

  More participants needed. Individual differences of participants.
• What are the weaknesses of repeated measures?

  More materials needed. Order effects occur. Demand characteristics.
• What are the weaknesses of matched pairs?

  Matching is difficult. More participants needed. Time consuming.