Research design

• What is a repeated measures design?


  The same participants are used in both conditions
• What are the strenghts of repeated measures design?


  No individual differences and fewer pps needed
• What are the weaknesses of repeated measures design?


  Risk of demand characteristics and order effect.
• What is independent measures design?


  Different participants are used in each condition of the independent variable.
• What are the strenghts of independant measure design?


  Lower risk of demand characteristics, no order effect
• What are the weakness of independant measure design?


  Individual differences and more pps needed
• What is matched pairs design?


  Uses different participants in each condition but attempts to match them on important characteristics
• What are the strenghts of matched pairs design?


  Individual differenced reduced, no order effects and no demand characteristics
• What are the weakensses of matched pairs design?


  never completly matched, time consuming and expensive