Experimental and research design

• What does research design refer to?

  Allocation of participants to study conditions
• When is experimental design used?

  When an experiment is conducted
• What are the two conditions in an experiment?

  Experimental and control
• What decision must be made regarding participant conditions?

  Whether to participate in both or one
• How many types of research design are there?

  Three types
• What are the three types of research design?

  Independent measures, repeated measures, matched pairs
• What does independent measures design involve?

  Grouping participants in one condition
• What is a strength of independent measures design?

  No order effects
• What is a weakness of independent measures design?

  Time-consuming requirements
• What does repeated measures design use?

  The same participants in all conditions
• What is a strength of repeated measures design?

  Reduces costs and ensures no individual differences
• What is a weakness of repeated measures design?

  Potential demand characteristics and order effects
• What does matched pairs design involve?

  Participants being different but matched on characteristics
• What is a strength of matched pairs design?

  Allows for fair comparisons between groups
• What is a weakness of matched pairs design?

  Time-consuming to match all characteristics
• What is a limitation of matching characteristics in matched pairs design?

  Not all characteristics can be equally matched