experiment designs

Question 1

INDEPENDANT GROUPS DESIGN

Answer 1

• placed in separate groups, each group does one IV, compare DV of 2 groups
  ✅random allocation
  ❌cannot control p’s variables e.g. memory

Question 2

MATCHED PAIRS DESIGN

Answer 2

• 2 groups matched on key characteristics relevant to study, each group 1 IV, compare DV of 2 groups
  ✅restrict amount of variables
  ❌time consuming, cant control all variables

Question 3

REPEATED MEASURE DESIGN

Answer 3

• all p’s receive all levels of IV and compare DV p’s 2 tests
  ✅hide aims, use counterbalancing
  ❌may guess aims, boredom effect, practice effect

Question 4

COUNTER BALANCING

Answer 4

• ensures each condition in repeated measure is tested by groups equally
  e.g. A = morning / B = afternoon
  1) AB or BA = 2 groups, each group does A and B
  2) ABBA = all p’s take part in each condition twice + compare scores