Experimental design

Cards (10)

  • what are the 3 types of experimental design?
    1. repeated measures
    2. matched pairs
    3. independent groups
  • what is a repeated measure experiment?
    where all the participants take part in each condition
  • what is a matched pairs experiment?
    participants are placed into pairs based of a key variable like age , 1 member of each pair is then placed into each condition
  • what is an independent group experiment?
    when you have 2 separate groups that are randomly allocated and each group does 1 condition
  • what are some advantages of repeated measures?
    1. fewer participants
    2. cheaper
    3. less time needed
    4. reduces participant variables
  • what are some disadvantages of repeated measures?
    1. practice effect
    2. order effects
    3. fatigue / boredom
  • what are some advantages of matched pairs?
    1. no order effects
    2. no participant variables
    3. no demand characteristics
    4. increased validity
  • what are some disadvantages of matched pairs?
    1. impossible for exact match
    2. more participants
  • what are some advantages of independent groups?
    1. no order effects
    2. reduced demand characteristics
    3. increased validity
  • what are some disadvantages of independent groups?
    1. more participants
    2. participant variables