Reliability and Validity

Question 1

Reliability

Answer 1

the consistency of a measure - the same result will be achieved when the test is repeated

Question 2

Correlation coefficient

Answer 2

used to asses the degree of reliability; a high positive correlation means the test is reliable

Question 3

Internal consistency

Answer 3

Comparing test items to determine consistency

Question 4

Test-retest consistency

Answer 4

administering the test twice at two different points in time, assuming there is no change in the construct being measured (eg intelligence)

Question 5

Validity

Answer 5

the extent to which a test measures what it claims to measure
It isn’t determined by a single statistic, but a body of research

Question 6

Face validity

Answer 6

tests the accuracy of testing at the face value; the test looks like it works

Question 7

Construct validity

Answer 7

the extent to which a test captures a construct/trait

must demonstrate that the theoretical construct exist

Question 8

Concurrent validity

Answer 8

the degree to which a test corresponds to other tests

Question 9

Predictive validity

Answer 9

Accurately predicting criteria occurring in the future

Question 10

Reliability vs Validity

Answer 10

reliability is a measure of precision
validity is a measure of accuracy
It’s possible for a test to be reliable, not valid

Question 11

Internal validity and reliability

Answer 11

validity and reliability in terms of instruments and research tools used within an investigation

Question 12

External validity and reliability

Answer 12

in terms of applying findings to and using tools on wider population