experimental design

Question 1

what is independent groups

Answer 1

ppts are divided into 2 groups
one group does condition 1
other group does condition 2

Question 2

strengths of independent groups

Answer 2

not affected by order effects
not affected by demand characteristics

Question 3

weaknesses of independent groups

Answer 3

differences between ppts can act as extraneous variables

Question 4

what is repeated measures design

Answer 4

all ppts complete first condition and then complete second condition

Question 5

strengths of repeated measures

Answer 5

no ppts variables

Question 6

weaknesses of repeated measures

Answer 6

affected by order effects
demand characteristics

Question 7

what is matched pairs

Answer 7

ppts are divided into 2 groups
one does one condition
other does second condition
however each ppts in group 1 is matched to a ppts in group 2 bases on an important characteristic

Question 8

strengths of matched pairs

Answer 8

reduces ppts variables
not affected by order effects
no demand characteristics

Question 9

weaknesses of matched pairs

Answer 9

time consuming
expensive to organise