Experimental design

Question 1

what are the 3 types of experimental design?

Answer 1

1. repeated measures
2. matched pairs design
3. independent group design

Question 2

what is repeated measures?

Answer 2

each participants takes part in every condition under test

Question 3

what is matched pairs design?

Answer 3

pairs of participant are matched in terms of key variables i.e. age

Question 4

what is independent group design?

Answer 4

participants are allocated to 2 groups representing different levels of the IV

Question 5

what are the limitations of repeated measures?

Answer 5

order effects (fatigue/boredom/practise effect)
demand characteristics

Question 6

what are the limitations of matched pairs design?

Answer 6

difficult and time consuming to match

hard to control all the participant’s variables

Question 7

what are the limitations of independent group design?

Answer 7

cant control all the participants different characteristics or abilities

Question 8

how do u overcome the limitations of repeated measurs

Answer 8

counterbalancing: ensures every condition is tested first or second in equal amounts

Question 9

how do u overcome the limitations of matched pairs

Answer 9

restrict the number of variables to match on and conduct a pilot study

Question 10

how do u overcome the limitations of independent group design

Answer 10

randomly allocated participants to conditions to distribute variables evenly (done using random techniques)