paper 2 research methods

Question 1

when is non directional hypothesis used

Answer 1

-when theres no previous research findings to predict specific direction of results

Question 2

strengths volunteer sampling

Answer 2

-quick easy and cost effective
-participants often willing, conscious descion

Question 3

weaknesses volunteer sampling

Answer 3

-prone to volunteer bias
-results not easy generalise as likely have personality traits in common e.g sociable

Question 4

when is Man Whitney test useful

Answer 4

-test of difference
-ordinal
-unrelated (independent groups)

Question 5

meaning of ‘significant p<0.01’

Answer 5

less than 1% probabality differenc eoccured by chance
-difference is meaningful

Question 6

repeated measures design

Answer 6

-same participants allocated to all groups (i.e. take part in all conditions) of an experiment
-same participants different conditions

Question 7

features of science

Answer 7

-objectivity
-replicability
-controlled method
-hypothesis