Matched pairs

• Matched pair design is when you try to match both groups with key participant variables, making the groups as similar as possible.
• strengths -

  • low order effects, improves study's internal validity.
  • low demand characteristics
  • reduces effects of individual differences
  • can use same set of stimulus material in both conditions.
• limitations -

  • participant variables, hard to completely match variables so participants will always be slightly different
  • more participants required.