Experimental design

Question 1

what is experimental design

Answer 1

the different ways that testing participants are organised
there are 3 types: independent groups, repeated measures and

Question 2

what are independent groups

Answer 2

participants allocated to groups with each group experiencing a different condition

Question 3

pros of independent groups

Answer 3

participants are less likely to guess the purpose of investigation

Question 4

cons of independent groups

Answer 4

more expensive, twice as many people needed

Question 5

what are repeated measures

Answer 5

all participants take part in all conditions

Question 6

pros of repeated measures

Answer 6

fewer participants are needed
extraneous variables controlled

Question 7

cons of repeated measures

Question 8

what are matched pairs

Answer 8

participants matched on a variable affecting the DV then each assigned to one condition

Question 9

pros of matched pairs

Answer 9

participants dont become aware of purpose of the study

Question 10

cons of matched pairs

Answer 10

time consuming and expensive: whats the point of matched pairs if you are just going to separate them again