reliability and validity

Question 1

reliability

Answer 1

• consistency

internal rel = how consistent a test or wtv is WITHIN ITSELF

external validity = how consistent the results are overtime

Question 2

validity

Answer 2

accuracy

internal validity = how accurately a test is measures something that it says it measures

external validity = extent to which results can be generalised to other people/situations

in external validity =
ecological = to which extent does the findings reflect real life behaviour

temporal = to which extent are these findings true over time

Question 3

measuring realiblity

Answer 3

observations - inter observer reliability ( already have flashcard on it)
self report - test retest reliability

test retest-
1. test administered first time
2. same test given at later date
3. compare results by correlation , looking for correlation of 0.7 or higher

Question 4

measuring validity

Answer 4

concurrent validity -
- test produces similar results to already established and trusted test that measures the same thing

face validity -
test appears to measure what its supposed to measure just by looking at it

Question 5

improving reliability

Answer 5

questionnaires -
test retest is low ? , change question to close question to avoid confusion

interviews-
improve reliability , leading questions = removed

experiments-
standardised instructions

observations-
use clearly defined behavioural categories that dont overlap

Question 6

improving validity

Answer 6

questionnaires
- ensuring anonymity to reduce social desirability

experimental research
control group , standardised procedure

observations
covert observations (unaware they’re being watched)