RM-psy

Question 1

random sampling

Answer 1

when the target pop has an equal chance of being chosen eg names out of a hat

Question 2

S/W of random sampling

Answer 2

unbiased/less willing to participate

Question 3

opportunity sampling

Answer 3

selecting people available at the time eg approaching people in public

Question 4

S/W of opportunity sampling

Answer 4

quick cheap/unrepresentative

Question 5

volunteer sampling

Answer 5

ps volunteer themselves to be in a study eg through an advert

Question 6

S/W of volunteer sampling

Answer 6

ps less likely to withdraw/time consuming (having to wait)

Question 7

snowball sampling

Answer 7

ask ps to nominate people similar to themselves to be sampled

Question 8

S/W of snowball sampling

Answer 8

find unique characteristics faster/time consuming

Question 9

research design?

Answer 9

independent measures/repeated measures/matched pairs

Question 10

research methods?

Answer 10

lab/field/quasi

Question 11

S/W of self reports

Answer 11

quick easy to fund/interpreter bias

Question 12

S/W of experiments

Answer 12

high levels of repeatability/lacks ecological validity

Question 13

S/W of correlations

Answer 13

good to use when ethics are an issue/cant always find cause and effect

Question 14

S/W of observations

Answer 14

high ecological validity/hard to replicate (high levels of extraneous variables

Question 15

positive correlation

Answer 15

/

Question 16

negative correlation

Answer 16

\

Question 17

interval def, S/W

Answer 17

data that uses standardised scale eg measuring height S detailed data W none

Question 18

ordinal data def, S/W

Answer 18

data put into order or rate eg rating scales S can see range W mean cant be used to analyse data

Question 19

nominal data def, S/W

Answer 19

categories of behaviour with nominal level eg closed question responses S easy to analyse W limited detail

Question 20

validity=accuracy (internal def)

Answer 20

measuring what it intends to

Question 21

external validity

Answer 21

is the study measuring what it intends to beyond the current study

Question 22

threats to validity

Answer 22

observer bias researcher bias demand characteristics response bias

Question 23

reliability

Answer 23

is the results consistent

Question 24

is this a waste of time?

Answer 24

yes

Question 25

internal reliability

Answer 25

how consistent a study is within itself

Question 26

external reliability

Answer 26

the ability of a test to yield the same results both over time and from each individual who takes it